arm64: dts: uniphier: Remove compatible "snps,dw-pcie" from pcie node

The generic platform driver pcie-designware-plat.c doesn't work for
UniPhier PCIe host controller, because the controller has some
necessary initialization sequence for the controller-specific logic.

Currently the controller doesn't use "snps,dw-pcie" compatible,
so this is no longer needed. Remove the compatible string from the
pcie node.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20220913042321.4817-10-hayashi.kunihiko@socionext.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi

@@ -896,7 +896,7 @@ usb_ssphy1: ss-phy@310 {
 		};
 
 		pcie: pcie@66000000 {
-			compatible = "socionext,uniphier-pcie", "snps,dw-pcie";
+			compatible = "socionext,uniphier-pcie";
 			status = "disabled";
 			reg-names = "dbi", "link", "config";
 			reg = <0x66000000 0x1000>, <0x66010000 0x10000>,

arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi

@@ -873,7 +873,7 @@ usb1_ssphy0: ss-phy@300 {
 		};
 
 		pcie: pcie@66000000 {
-			compatible = "socionext,uniphier-pcie", "snps,dw-pcie";
+			compatible = "socionext,uniphier-pcie";
 			status = "disabled";
 			reg-names = "dbi", "link", "config";
 			reg = <0x66000000 0x1000>, <0x66010000 0x10000>,