ARM: dts: aspeed: bletchley: Switch to spi-gpio for spi2

Switch spi2 to spi-gpio driver to avoid unstable signal issue with EVT
HW.

Remove spi2 node and create a new spi2_gpio node.
Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Patrick Williams <patrick@stwcx.xyz>
Link: https://lore.kernel.org/r/20220215163151.32252-6-potin.lai@quantatw.comSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-facebook-bletchley.dts

@@ -32,7 +32,7 @@ iio-hwmon {
 			<&adc1 4>, <&adc1 5>, <&adc1 6>, <&adc1 7>;
 	};
 
-	spi_gpio: spi-gpio {
+	spi1_gpio: spi1-gpio {
 		compatible = "spi-gpio";
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -50,6 +50,26 @@ tpmdev@0 {
 		};
 	};
 
+	spi2_gpio: spi2-gpio {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		gpio-sck = <&gpio0 ASPEED_GPIO(X, 3) GPIO_ACTIVE_HIGH>;
+		gpio-mosi = <&gpio0 ASPEED_GPIO(X, 4) GPIO_ACTIVE_HIGH>;
+		gpio-miso = <&gpio0 ASPEED_GPIO(X, 5) GPIO_ACTIVE_HIGH>;
+		num-chipselects = <1>;
+		cs-gpios = <&gpio0 ASPEED_GPIO(X, 0) GPIO_ACTIVE_LOW>;
+
+		flash@0 {
+			reg = <0>;
+			compatible = "jedec,spi-nor";
+			m25p,fast-read;
+			label = "pnor";
+			spi-max-frequency = <100000000>;
+		};
+	};
+
 	switchphy: ethernet-phy@0 {
 		// Fixed link
 	};
@@ -225,19 +245,6 @@ flash@1 {
 	};
 };
 
-&spi2 {
-	status = "okay";
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_spi2_default>;
-
-	flash@0 {
-		status = "okay";
-		m25p,fast-read;
-		label = "pnor";
-		spi-max-frequency = <100000000>;
-	};
-};
-
 &i2c0 {
 	status = "okay";
 	/* TODO: Add ADC INA230 */