stm32/dma: Enable H7 DMA descriptors.
typedef struct _dma_descr_t dma_descr_t;
-#if defined(STM32F4) || defined(STM32F7)
+#if defined(STM32F4) || defined(STM32F7) || defined(STM32H7)
extern const dma_descr_t dma_I2C_1_RX;
extern const dma_descr_t dma_SPI_3_RX;
