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/Kconfig b/arch/arm/Kconfig
index dd9cac9..33c8411 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -716,6 +716,10 @@
 	select CPU_V7
 	select DM
 
+config TARGET_THUNDERX_88XX
+	bool "Support ThunderX 88xx"
+	select OF_CONTROL
+
 endchoice
 
 source "arch/arm/mach-at91/Kconfig"
@@ -784,6 +788,7 @@
 source "board/broadcom/bcm28155_ap/Kconfig"
 source "board/broadcom/bcmcygnus/Kconfig"
 source "board/broadcom/bcmnsp/Kconfig"
+source "board/cavium/thunderx/Kconfig"
 source "board/cirrus/edb93xx/Kconfig"
 source "board/compulab/cm_t335/Kconfig"
 source "board/compulab/cm_t43/Kconfig"