ARM: dts: stm32: Add MDMA support on STM32MP157C

Activate MDMA for STM32MP157C
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157c.dtsi

@@ -632,6 +632,16 @@ vrefbuf: vrefbuf@50025000 {
 			status = "disabled";
 		};
 
+		mdma1: dma@58000000 {
+			compatible = "st,stm32h7-mdma";
+			reg = <0x58000000 0x1000>;
+			interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc MDMA>;
+			#dma-cells = <5>;
+			dma-channels = <32>;
+			dma-requests = <48>;
+		};
+
 		usart1: serial@5c000000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x5c000000 0x400>;