ARM64: dts: meson-gx: remove unnecessary uart compatible

Since the switch to documented uart bindings, the old undocumented
compatible binding was left for simplicity.

This patch removes these unneeded compatible strings.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-gx.dtsi

@@ -225,14 +225,14 @@ reset: reset-controller@4404 {
 			};
 
 			uart_A: serial@84c0 {
-				compatible = "amlogic,meson-gx-uart", "amlogic,meson-uart";
+				compatible = "amlogic,meson-gx-uart";
 				reg = <0x0 0x84c0 0x0 0x14>;
 				interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>;
 				status = "disabled";
 			};
 
 			uart_B: serial@84dc {
-				compatible = "amlogic,meson-gx-uart", "amlogic,meson-uart";
+				compatible = "amlogic,meson-gx-uart";
 				reg = <0x0 0x84dc 0x0 0x14>;
 				interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_RISING>;
 				status = "disabled";
@@ -277,7 +277,7 @@ pwm_ef: pwm@86c0 {
 			};
 
 			uart_C: serial@8700 {
-				compatible = "amlogic,meson-gx-uart", "amlogic,meson-uart";
+				compatible = "amlogic,meson-gx-uart";
 				reg = <0x0 0x8700 0x0 0x14>;
 				interrupts = <GIC_SPI 93 IRQ_TYPE_EDGE_RISING>;
 				status = "disabled";
@@ -388,14 +388,14 @@ sec_AO: ao-secure@140 {
 			};
 
 			uart_AO: serial@4c0 {
-				compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart", "amlogic,meson-uart";
+				compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart";
 				reg = <0x0 0x004c0 0x0 0x14>;
 				interrupts = <GIC_SPI 193 IRQ_TYPE_EDGE_RISING>;
 				status = "disabled";
 			};
 
 			uart_AO_B: serial@4e0 {
-				compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart", "amlogic,meson-uart";
+				compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart";
 				reg = <0x0 0x004e0 0x0 0x14>;
 				interrupts = <GIC_SPI 197 IRQ_TYPE_EDGE_RISING>;
 				status = "disabled";