rockchip: Add support for veyron-mickey (Chromebit)

This adds support for the Asus Chromebit, and RK3288-based device designed
to plug directly into an HDMI monitor. The device tree file comes from
Linux v4.8.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/google/veyron/Kconfig b/board/google/veyron/Kconfig
index b1f51ce..a99190f 100644
--- a/board/google/veyron/Kconfig
+++ b/board/google/veyron/Kconfig
@@ -13,3 +13,19 @@
 	def_bool y
 
 endif
+
+if TARGET_CHROMEBIT_MICKEY
+
+config SYS_BOARD
+	default "veyron"
+
+config SYS_VENDOR
+	default "google"
+
+config SYS_CONFIG_NAME
+	default "veyron"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+
+endif
diff --git a/board/google/veyron/MAINTAINERS b/board/google/veyron/MAINTAINERS
index d641eed..e44e1a9 100644
--- a/board/google/veyron/MAINTAINERS
+++ b/board/google/veyron/MAINTAINERS
@@ -4,3 +4,10 @@
 F:	board/google/veyron/
 F:	include/configs/veyron.h
 F:	configs/chromebook_jerry_defconfig
+
+CHROMEBIT MICKEY BOARD
+M:	Simon Glass <sjg@chromium.org>
+S:	Maintained
+F:	board/google/veyron/
+F:	include/configs/veyron.h
+F:	configs/chromebit_mickey_defconfig