KSDK2 - fix SPI

When the function spi_master_write is called a transfer will occur
and set the end of queue flag.  This disables further SPI transfers
which causes the next SPI transfer to hang forever.

This patch clears the end of queue flag so SPI does not hang after
the first transfer.

Author: c1728p9

hal/targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K22F/spi_api.c

@@ -108,7 +108,7 @@ int spi_master_write(spi_t *obj, int value) {
     // wait rx buffer full
     while (!spi_readable(obj));
     rx_data = DSPI_ReadData(spi_address[obj->instance]);
-    DSPI_ClearStatusFlags(spi_address[obj->instance], kDSPI_RxFifoDrainRequestFlag);
+    DSPI_ClearStatusFlags(spi_address[obj->instance], kDSPI_RxFifoDrainRequestFlag | kDSPI_EndOfQueueFlag);
     return rx_data & 0xffff;
 }
 

hal/targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K64F/spi_api.c

@@ -108,7 +108,7 @@ int spi_master_write(spi_t *obj, int value) {
     // wait rx buffer full
     while (!spi_readable(obj));
     rx_data = DSPI_ReadData(spi_address[obj->instance]);
-    DSPI_ClearStatusFlags(spi_address[obj->instance], kDSPI_RxFifoDrainRequestFlag);
+    DSPI_ClearStatusFlags(spi_address[obj->instance], kDSPI_RxFifoDrainRequestFlag | kDSPI_EndOfQueueFlag);
     return rx_data & 0xffff;
 }