drivers: dma: stm32u5: use correct tables for data width

The tables for the dest and src data width constants were incorrectly
swapped. This commit uses the correct constants and renames the tables.

This change is only cosmetic for the stm32u5 since these constants are
the same but the existing names were probably inherited from another
driver where the p_*/m_* prefix was more appropriate.

Signed-off-by: Brett Witherspoon <[email protected]>

drivers/dma/dma_stm32u5.c

@@ -24,13 +24,13 @@ LOG_MODULE_REGISTER(dma_stm32, CONFIG_DMA_LOG_LEVEL);
 
 #define DT_DRV_COMPAT st_stm32u5_dma
 
-static const uint32_t table_m_size[] = {
+static const uint32_t table_src_size[] = {
 	LL_DMA_SRC_DATAWIDTH_BYTE,
 	LL_DMA_SRC_DATAWIDTH_HALFWORD,
 	LL_DMA_SRC_DATAWIDTH_WORD,
 };
 
-static const uint32_t table_p_size[] = {
+static const uint32_t table_dst_size[] = {
 	LL_DMA_DEST_DATAWIDTH_BYTE,
 	LL_DMA_DEST_DATAWIDTH_HALFWORD,
 	LL_DMA_DEST_DATAWIDTH_WORD,
@@ -489,10 +489,10 @@ static int dma_stm32_configure(const struct device *dev,
 	/* Set the data width, when source_data_size equals dest_data_size */
 	int index = find_lsb_set(config->source_data_size) - 1;
 
-	DMA_InitStruct.SrcDataWidth = table_p_size[index];
+	DMA_InitStruct.SrcDataWidth = table_src_size[index];
 
 	index = find_lsb_set(config->dest_data_size) - 1;
-	DMA_InitStruct.DestDataWidth = table_m_size[index];
+	DMA_InitStruct.DestDataWidth = table_dst_size[index];
 
 	if (stream->source_periph) {
 		DMA_InitStruct.BlkDataLength = config->head_block->block_size /