arm64: dts: ls1028a: Add ftm_alarm0 DT node

The patch adds ftm_alarm0 DT node for LS1028ARDB board
FlexTimer1 module is used to wakeup the system
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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

@@ -17,6 +17,10 @@ / {
 	#address-cells = <2>;
 	#size-cells = <2>;
 
+	aliases {
+		rtc1 = &ftm_alarm0;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -1003,6 +1007,19 @@ fixed-link {
 				};
 			};
 		};
+
+		rcpm: power-controller@1e34040 {
+			compatible = "fsl,ls1028a-rcpm", "fsl,qoriq-rcpm-2.1+";
+			reg = <0x0 0x1e34040 0x0 0x1c>;
+			#fsl,rcpm-wakeup-cells = <7>;
+		};
+
+		ftm_alarm0: timer@2800000 {
+			compatible = "fsl,ls1028a-ftm-alarm";
+			reg = <0x0 0x2800000 0x0 0x10000>;
+			fsl,rcpm-wakeup = <&rcpm 0x0 0x0 0x0 0x0 0x4000 0x0 0x0>;
+			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+		};
 	};
 
 	malidp0: display@f080000 {