ARM: dts: aspeed: Migrate away from aspeed, g[45].* compatibles

Use the SoC-specific compatible strings instead.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-g4.dtsi

@@ -182,7 +182,7 @@ syscon: syscon@1e6e2000 {
 				#reset-cells = <1>;
 
 				pinctrl: pinctrl {
-					compatible = "aspeed,g4-pinctrl";
+					compatible = "aspeed,ast2400-pinctrl";
 				};
 
 				p2a: p2a-control {

arch/arm/boot/dts/aspeed-g5.dtsi

@@ -215,7 +215,7 @@ syscon: syscon@1e6e2000 {
 				#reset-cells = <1>;
 
 				pinctrl: pinctrl {
-					compatible = "aspeed,g5-pinctrl";
+					compatible = "aspeed,ast2500-pinctrl";
 					aspeed,external-nodes = <&gfx &lhc>;
 
 				};