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/board/cavium/thunderx/MAINTAINERS b/board/cavium/thunderx/MAINTAINERS
new file mode 100644
index 0000000..c84d3b5
--- /dev/null
+++ b/board/cavium/thunderx/MAINTAINERS
@@ -0,0 +1,6 @@
+THUNDERX BOARD
+M:	Sergey Temerkhanov <s.temerkhanov@gmail.com>
+S:	Maintained
+F:	board/cavium/thunderx/
+F:	include/configs/thunderx_88xx.h
+F:	configs/thunderx_88xx_defconfig