boards: litex_vexriscv: Enable LiteX SPI driver

This commit enables LiteX SPI driver for litex_vexriscv board.

Signed-off-by: Daniel Craviee <dcraviee@internships.antmicro.com>
Signed-off-by: Mateusz Holenko <mholenko@antmicro.com>

boards/riscv/litex_vexriscv/litex_vexriscv.dts

@@ -41,3 +41,7 @@
 &dna0 {
 	status = "okay";
 };
+
+&spi0 {
+	status = "okay";
+};

boards/riscv/litex_vexriscv/litex_vexriscv.yaml

@@ -11,6 +11,8 @@ arch: riscv32
 toolchain:
   - zephyr
 ram: 262144
+supported:
+  - spi
 testing:
   ignore_tags:
     - bluetooth

boards/riscv/litex_vexriscv/litex_vexriscv_defconfig

@@ -19,3 +19,5 @@ CONFIG_ETH_LITEETH_0=y
 CONFIG_NET_L2_ETHERNET=y
 CONFIG_HWINFO=y
 CONFIG_HWINFO_LITEX=y
+CONFIG_SPI=y
+CONFIG_SPI_LITESPI=y

dts/riscv/riscv32-litex-vexriscv.dtsi

@@ -44,6 +44,17 @@
 			label = "uart0";
 			status = "disabled";
 		};
+		spi0: spi@e0002000 {
+			compatible = "litex,spi";
+			interrupt-parent = <&intc0>;
+			interrupts = <5 0>;
+			reg = <0xe0002000 0x34>;
+			reg-names = "control";
+			label = "spi0";
+			status = "disabled";
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
 		timer0: serial@e0002800 {
 			compatible = "litex,timer0";
 			interrupt-parent = <&intc0>;