dt-bindings: dma: stm32 introduce 32bit transfer macro

This change introduces 32bit DMA tranfer macro

Signed-off-by: Mario Paja <[email protected]>

Author: mariopaja

include/zephyr/dt-bindings/dma/stm32_dma.h

@@ -67,6 +67,7 @@
 #define STM32_DMA_PERIPH_RX	(STM32_DMA_PERIPH_TO_MEMORY | STM32_DMA_MEM_INC)
 
 #define STM32_DMA_16BITS	(STM32_DMA_PERIPH_16BITS | STM32_DMA_MEM_16BITS)
+#define STM32_DMA_32BITS	(STM32_DMA_PERIPH_32BITS | STM32_DMA_MEM_32BITS)
 
 /** @} */