ARM: dts: stm32: add ltdc support on stm32mp157c

Add support for the display controller ltdc.
Signed-off-by: yannick fertre <yannick.fertre@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157c.dtsi

@@ -718,6 +718,17 @@ crc1: crc@58009000 {
 			status = "disabled";
 		};
 
+		ltdc: display-controller@5a001000 {
+			compatible = "st,stm32-ltdc";
+			reg = <0x5a001000 0x400>;
+			interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc LTDC_PX>;
+			clock-names = "lcd";
+			resets = <&rcc LTDC_R>;
+			status = "disabled";
+		};
+
 		usart1: serial@5c000000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x5c000000 0x400>;