rockchip: rk3288: move evb board to rockchip folder

The 'evb-rk3288' is not a vendor name, change it to 'rockchip' which is
the real vendor name.

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/board/rockchip/evb_rk3288/Kconfig b/board/rockchip/evb_rk3288/Kconfig
new file mode 100644
index 0000000..8ab07f4
--- /dev/null
+++ b/board/rockchip/evb_rk3288/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_EVB_RK3288
+
+config SYS_BOARD
+	default "evb_rk3288"
+
+config SYS_VENDOR
+	default "rockchip"
+
+config SYS_CONFIG_NAME
+	default "evb_rk3288"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+
+endif