riscv: sophgo: dts: Add spi controller for SG2042

Add spi controllers for SG2042.

SG2042 uses the upstreamed Synopsys DW SPI IP.

Signed-off-by: Zixian Zeng <sycamoremoon376@gmail.com>
Link: https://lore.kernel.org/r/20250425-sfg-spi-v6-3-2dbe7bb46013@gmail.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Chen Wang <wangchen20@iscas.ac.cn>

Author: sycamoremoon

arch/riscv/boot/dts/sophgo/sg2042.dtsi

@@ -543,6 +543,32 @@
 			status = "disabled";
 		};
 
+		spi0: spi@7040004000 {
+			compatible = "sophgo,sg2042-spi", "snps,dw-apb-ssi";
+			reg = <0x70 0x40004000 0x00 0x1000>;
+			clocks = <&clkgen GATE_CLK_APB_SPI>;
+			interrupt-parent = <&intc>;
+			interrupts = <110 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			num-cs = <2>;
+			resets = <&rstgen RST_SPI0>;
+			status = "disabled";
+		};
+
+		spi1: spi@7040005000 {
+			compatible = "sophgo,sg2042-spi", "snps,dw-apb-ssi";
+			reg = <0x70 0x40005000 0x00 0x1000>;
+			clocks = <&clkgen GATE_CLK_APB_SPI>;
+			interrupt-parent = <&intc>;
+			interrupts = <111 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			num-cs = <2>;
+			resets = <&rstgen RST_SPI1>;
+			status = "disabled";
+		};
+
 		emmc: mmc@704002a000 {
 			compatible = "sophgo,sg2042-dwcmshc";
 			reg = <0x70 0x4002a000 0x0 0x1000>;