ARM: dts: meson8: use stable UART bindings with correct gate clock

Switch to the stable UART bindings and add the correct gate clocks
to the non-AO UART nodes.
This fixes the non-AO UARTs if the bootloader didn't un-gate the clocks.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm/boot/dts/meson8.dtsi

@@ -339,19 +339,27 @@ &spifc {
 };
 
 &uart_AO {
-	clocks = <&clkc CLKID_CLK81>;
+	compatible = "amlogic,meson8-uart", "amlogic,meson-uart";
+	clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_XTAL>, <&clkc CLKID_CLK81>;
+	clock-names = "baud", "xtal", "pclk";
 };
 
 &uart_A {
-	clocks = <&clkc CLKID_CLK81>;
+	compatible = "amlogic,meson8-uart", "amlogic,meson-uart";
+	clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_XTAL>, <&clkc CLKID_UART0>;
+	clock-names = "baud", "xtal", "pclk";
 };
 
 &uart_B {
-	clocks = <&clkc CLKID_CLK81>;
+	compatible = "amlogic,meson8-uart", "amlogic,meson-uart";
+	clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_XTAL>, <&clkc CLKID_UART1>;
+	clock-names = "baud", "xtal", "pclk";
 };
 
 &uart_C {
-	clocks = <&clkc CLKID_CLK81>;
+	compatible = "amlogic,meson8-uart", "amlogic,meson-uart";
+	clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_XTAL>, <&clkc CLKID_UART2>;
+	clock-names = "baud", "xtal", "pclk";
 };
 
 &usb0 {