ARM: dts: ls1021a: Add the status property disable PCIe

Add the status property disable the PCIe, the property will be enable
by bootloader.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/ls1021a.dtsi

@@ -736,6 +736,7 @@ pcie@3400000 {
 					<0000 0 0 2 &gic GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>,
 					<0000 0 0 3 &gic GIC_SPI 190 IRQ_TYPE_LEVEL_HIGH>,
 					<0000 0 0 4 &gic GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
 		};
 
 		pcie@3500000 {
@@ -759,6 +760,7 @@ pcie@3500000 {
 					<0000 0 0 2 &gic GIC_SPI 189 IRQ_TYPE_LEVEL_HIGH>,
 					<0000 0 0 3 &gic GIC_SPI 191 IRQ_TYPE_LEVEL_HIGH>,
 					<0000 0 0 4 &gic GIC_SPI 193 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
 		};
 
 		can0: can@2a70000 {