x86: Fix PCI UART compatible string for crownbay and galileo

With recent ns16550 driver changes, we only changed the legacy UART
(at I/O port 0x3f8) compatible string, but forgot to change the PCI
UART compatible string. Now fix it.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Acked-by: NSimon Glass <sjg@chromium.org>

arch/x86/dts/crownbay.dts

@@ -117,7 +117,7 @@
 							"pci8086,8811",
 							"pciclass,070002",
 							"pciclass,0700",
-							"x86-uart";
+							"ns16550";
 					u-boot,dm-pre-reloc;
 					reg = <0x00025100 0x0 0x0 0x0 0x0
 					       0x01025110 0x0 0x0 0x0 0x0>;
@@ -131,7 +131,7 @@
 							"pci8086,8812",
 							"pciclass,070002",
 							"pciclass,0700",
-							"x86-uart";
+							"ns16550";
 					u-boot,dm-pre-reloc;
 					reg = <0x00025200 0x0 0x0 0x0 0x0
 					       0x01025210 0x0 0x0 0x0 0x0>;
@@ -145,7 +145,7 @@
 							"pci8086,8813",
 							"pciclass,070002",
 							"pciclass,0700",
-							"x86-uart";
+							"ns16550";
 					u-boot,dm-pre-reloc;
 					reg = <0x00025300 0x0 0x0 0x0 0x0
 					       0x01025310 0x0 0x0 0x0 0x0>;
@@ -159,7 +159,7 @@
 							"pci8086,8814",
 							"pciclass,070002",
 							"pciclass,0700",
-							"x86-uart";
+							"ns16550";
 					u-boot,dm-pre-reloc;
 					reg = <0x00025400 0x0 0x0 0x0 0x0
 					       0x01025410 0x0 0x0 0x0 0x0>;

arch/x86/dts/galileo.dts

@@ -70,7 +70,7 @@
 					"pci8086,0936",
 					"pciclass,070002",
 					"pciclass,0700",
-					"x86-uart";
+					"ns16550";
 			u-boot,dm-pre-reloc;
 			reg = <0x0000a500 0x0 0x0 0x0 0x0
 			       0x0200a510 0x0 0x0 0x0 0x0>;