arm64: dts: lg: Fix SP804 users

Even though the SP804 binding allows to specify only one clock, the
primecell driver requires a named clock to activate the bus clock.

Specify the one clock three times and provide some clock-names, to
make the DT match the SP804 and primecell binding.
Also add the missing arm,primecell compatible string.

Link: https://lore.kernel.org/r/20200907121831.242281-4-andre.przywara@arm.com
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

Author: Andre-ARM

arch/arm64/boot/dts/lg/lg1312.dtsi

@@ -131,11 +131,11 @@
 		ranges;
 
 		timers: timer@fd100000 {
-			compatible = "arm,sp804";
+			compatible = "arm,sp804", "arm,primecell";
 			reg = <0x0 0xfd100000 0x1000>;
 			interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clk_bus>;
-			clock-names = "apb_pclk";
+			clocks = <&clk_bus>, <&clk_bus>, <&clk_bus>;
+			clock-names = "timer0clk", "timer1clk", "apb_pclk";
 		};
 		wdog: watchdog@fd200000 {
 			compatible = "arm,sp805", "arm,primecell";

arch/arm64/boot/dts/lg/lg1313.dtsi

@@ -131,11 +131,11 @@
 		ranges;
 
 		timers: timer@fd100000 {
-			compatible = "arm,sp804";
+			compatible = "arm,sp804", "arm,primecell";
 			reg = <0x0 0xfd100000 0x1000>;
 			interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clk_bus>;
-			clock-names = "apb_pclk";
+			clocks = <&clk_bus>, <&clk_bus>, <&clk_bus>;
+			clock-names = "timer0clk", "timer1clk", "apb_pclk";
 		};
 		wdog: watchdog@fd200000 {
 			compatible = "arm,sp805", "arm,primecell";