arm64: dts: meson: g12a: set uart_ao clocks

Now that the AO clock controller is available, make the uarts of the
always-on domain claim the appropriate peripheral clock.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-g12a.dtsi

@@ -708,7 +708,7 @@ uart_AO: serial@3000 {
 					     "amlogic,meson-ao-uart";
 				reg = <0x0 0x3000 0x0 0x18>;
 				interrupts = <GIC_SPI 193 IRQ_TYPE_EDGE_RISING>;
-				clocks = <&xtal>, <&xtal>, <&xtal>;
+				clocks = <&xtal>, <&clkc_AO CLKID_AO_UART>, <&xtal>;
 				clock-names = "xtal", "pclk", "baud";
 				status = "disabled";
 			};
@@ -718,7 +718,7 @@ uart_AO_B: serial@4000 {
 					     "amlogic,meson-ao-uart";
 				reg = <0x0 0x4000 0x0 0x18>;
 				interrupts = <GIC_SPI 197 IRQ_TYPE_EDGE_RISING>;
-				clocks = <&xtal>, <&xtal>, <&xtal>;
+				clocks = <&xtal>, <&clkc_AO CLKID_AO_UART2>, <&xtal>;
 				clock-names = "xtal", "pclk", "baud";
 				status = "disabled";
 			};