rockchip: Add support for veyron-minnie (ASUS Chromebook Flip)

This adds support for the Asus Chromebook Flip, an RK3288-based clamshell
device which can flip into 'tablet' mode. The device tree file comes from
Linux v4.8. The SDRAM parameters are for 4GB Samsung LPDDR3.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/google/veyron/Kconfig b/board/google/veyron/Kconfig
index a99190f..770e9aa 100644
--- a/board/google/veyron/Kconfig
+++ b/board/google/veyron/Kconfig
@@ -29,3 +29,19 @@
 	def_bool y
 
 endif
+
+if TARGET_CHROMEBOOK_MINNIE
+
+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