Merge pull request ARMmbed#4305 from LMESTM/fix_increase_stm32_spi_timeout

Increase stm32 timeout for spi transfers

Author: 0xc0170

targets/TARGET_STM/stm_spi_api.c

@@ -357,7 +357,7 @@ int spi_master_write(spi_t *obj, int value)
     size = (handle->Init.DataSize == SPI_DATASIZE_16BIT) ? 2 : 1;
 
     /*  Use 10ms timeout */
-    ret = HAL_SPI_TransmitReceive(handle,(uint8_t*)&value,(uint8_t*)&Rx,size,10);
+    ret = HAL_SPI_TransmitReceive(handle,(uint8_t*)&value,(uint8_t*)&Rx,size,HAL_MAX_DELAY);
 
     if(ret == HAL_OK) {
         return Rx;