MCUXpresso: Update Kinetis DSPI SDK drivers

- Added dummy data setup API to allow users to configure
  the dummy data to be transferred.
- Added new APIs for half-duplex transfer function. Users
  can send and receive data by one API in the polling/interrupt/EDMA way,
  and they can choose either to transmit first or to receive first.
  Additionally, the PCS pin can be configured as assert status in
  transmission (between transmit and receive) by setting the
  isPcsAssertInTransfer to true.
- Fix for MISRA issues

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K66F/drivers/fsl_dspi.c

@@ -1,31 +1,9 @@
 /*
  * Copyright (c) 2015, Freescale Semiconductor, Inc.
- * Copyright 2016-2017 NXP
+ * Copyright 2016-2018 NXP
+ * All rights reserved.
  *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * o Redistributions of source code must retain the above copyright notice, this list
- *   of conditions and the following disclaimer.
- *
- * o Redistributions in binary form must reproduce the above copyright notice, this
- *   list of conditions and the following disclaimer in the documentation and/or
- *   other materials provided with the distribution.
- *
- * o Neither the name of the copyright holder nor the names of its
- *   contributors may be used to endorse or promote products derived from this
- *   software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 #ifndef _FSL_DSPI_EDMA_H_
 #define _FSL_DSPI_EDMA_H_
@@ -41,14 +19,20 @@
  * Definitions
  **********************************************************************************************************************/
 
+/*! @name Driver version */
+/*@{*/
+/*! @brief DSPI EDMA driver version 2.2.2. */
+#define FSL_DSPI_EDMA_DRIVER_VERSION (MAKE_VERSION(2, 2, 2))
+/*@}*/
+
 /*!
-* @brief Forward declaration of the DSPI eDMA master handle typedefs.
-*/
+ * @brief Forward declaration of the DSPI eDMA master handle typedefs.
+ */
 typedef struct _dspi_master_edma_handle dspi_master_edma_handle_t;
 
 /*!
-* @brief Forward declaration of the DSPI eDMA slave handle typedefs.
-*/
+ * @brief Forward declaration of the DSPI eDMA slave handle typedefs.
+ */
 typedef struct _dspi_slave_edma_handle dspi_slave_edma_handle_t;
 
 /*!
@@ -186,6 +170,21 @@ void DSPI_MasterTransferCreateHandleEDMA(SPI_Type *base,
  */
 status_t DSPI_MasterTransferEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle, dspi_transfer_t *transfer);
 
+/*!
+ * @brief Transfers a block of data using a eDMA method.
+ *
+ * This function transfers data using eDNA, the transfer mechanism is half-duplex. This is a non-blocking function,
+ * which returns right away. When all data is transferred, the callback function is called.
+ *
+ * @param base DSPI base pointer
+ * @param handle A pointer to the dspi_master_edma_handle_t structure which stores the transfer state.
+ * @param transfer A pointer to the dspi_half_duplex_transfer_t structure.
+ * @return status of status_t.
+ */
+status_t DSPI_MasterHalfDuplexTransferEDMA(SPI_Type *base,
+                                           dspi_master_edma_handle_t *handle,
+                                           dspi_half_duplex_transfer_t *xfer);
+
 /*!
  * @brief DSPI master aborts a transfer which is using eDMA.
  *