ARM: stm32: Select DMA, DMAMUX and MDMA support on STM32MP157C

This patch select DMA, DMAMUX and MDMA support for STM32MP157C machine.
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-stm32/Kconfig

@@ -46,6 +46,9 @@ if ARCH_MULTI_V7
 
 config MACH_STM32MP157
 	bool "STMicroelectronics STM32MP157"
+	select STM32_DMA
+	select STM32_DMAMUX
+	select STM32_MDMA
 	default y
 
 endif # ARMv7-A