arm64: dts: ls1028a: Update flexcan properties

LS1028A supports two flexcan controllers similar to LX2160A.

There's already a compatible entry defined i.e "fsl,lx2160ar1-flexcan"
which can be further reused for LS1028A.
Please note, "fsl,ls1028ar1-flexcan" compatible entry doesn't exists and
can be safely removed.

LS1028A has a single peripheral clock (i.e platform clock) source
connected to both "ipg" and "per" and therefore, remove "sysclk" as
clock source from device-tree.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi

@@ -418,21 +418,25 @@ esdhc1: mmc@2150000 {
 		};
 
 		can0: can@2180000 {
-			compatible = "fsl,ls1028ar1-flexcan", "fsl,lx2160ar1-flexcan";
+			compatible = "fsl,lx2160ar1-flexcan";
 			reg = <0x0 0x2180000 0x0 0x10000>;
 			interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&sysclk>, <&clockgen QORIQ_CLK_PLATFORM_PLL
-						       QORIQ_CLK_PLL_DIV(2)>;
+			clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
+					    QORIQ_CLK_PLL_DIV(2)>,
+				 <&clockgen QORIQ_CLK_PLATFORM_PLL
+					    QORIQ_CLK_PLL_DIV(2)>;
 			clock-names = "ipg", "per";
 			status = "disabled";
 		};
 
 		can1: can@2190000 {
-			compatible = "fsl,ls1028ar1-flexcan", "fsl,lx2160ar1-flexcan";
+			compatible = "fsl,lx2160ar1-flexcan";
 			reg = <0x0 0x2190000 0x0 0x10000>;
 			interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&sysclk>, <&clockgen QORIQ_CLK_PLATFORM_PLL
-						       QORIQ_CLK_PLL_DIV(2)>;
+			clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
+					    QORIQ_CLK_PLL_DIV(2)>,
+				 <&clockgen QORIQ_CLK_PLATFORM_PLL
+					    QORIQ_CLK_PLL_DIV(2)>;
 			clock-names = "ipg", "per";
 			status = "disabled";
 		};