armv8: cavium: Add ThunderX 88xx board definition

This commit adds basic Cavium ThunderX 88xx board definitions and support.

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
[trini: Drop CONFIG_SYS_GENERIC_BOARD define]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/dts/thunderx-88xx.dtsi b/arch/arm/dts/thunderx-88xx.dtsi
index 086652f..6e9230b 100644
--- a/arch/arm/dts/thunderx-88xx.dtsi
+++ b/arch/arm/dts/thunderx-88xx.dtsi
@@ -348,7 +348,7 @@
 			interrupts = <1 21 4>;
 			clocks = <&refclk50mhz>;
 			clock-names = "apb_pclk";
-			flags = <1>;
+			uboot,skip-init;
 		};
 
 		uaa1: serial@87e0,25000000 {
@@ -357,7 +357,7 @@
 			interrupts = <1 22 4>;
 			clocks = <&refclk50mhz>;
 			clock-names = "apb_pclk";
-			flags = <1>;
+			uboot,skip-init;
 		};
 	};
 };