ARM: dts: stm32: add qspi support for stm32mp157c

This patch adds qspi support on stm32mp157c,
read in memory mapped, write in indirect mode.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157c.dtsi

@@ -720,6 +720,16 @@ mdma1: dma@58000000 {
 			dma-requests = <48>;
 		};
 
+		qspi: qspi@58003000 {
+			compatible = "st,stm32f469-qspi";
+			reg = <0x58003000 0x1000>, <0x70000000 0x10000000>;
+			reg-names = "qspi", "qspi_mm";
+			interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc QSPI_K>;
+			resets = <&rcc QSPI_R>;
+			status = "disabled";
+		};
+
 		crc1: crc@58009000 {
 			compatible = "st,stm32f7-crc";
 			reg = <0x58009000 0x400>;