drivers: disk: stm32 sdmmc: add stm32n6 support

Add STM32N6 to the list of series that support HWFC for SDMMC

Signed-off-by: Guillaume Gautier <[email protected]>

Author: gautierg-st

drivers/disk/Kconfig.sdmmc

@@ -51,7 +51,8 @@ config SDMMC_STM32_HWFC
 		   SOC_SERIES_STM32H7X || \
 		   SOC_SERIES_STM32F7X || \
 		   SOC_SERIES_STM32L4X || \
-		   SOC_SERIES_STM32L5X
+		   SOC_SERIES_STM32L5X || \
+		   SOC_SERIES_STM32N6X
 	help
 	  Enable SDMMC Hardware Flow Control to avoid FIFO underrun (TX mode) and
 	  overrun (RX mode) errors.