rockchip: add basic support for fennec-rk3288 board

Fennec is a RK3288-based development board with 2 USB ports, HDMI,
micro-SD card, audio and WiFi and Gigabit Ethernet. It also includes
on-board 8GB eMMC and 2GB of SDRAM. Expansion connectors provides access
to display pins, I2C, SPI, UART and GPIOs.

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/board/rockchip/fennec_rk3288/Kconfig b/board/rockchip/fennec_rk3288/Kconfig
new file mode 100644
index 0000000..1dcfcf0
--- /dev/null
+++ b/board/rockchip/fennec_rk3288/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_FENNEC_RK3288
+
+config SYS_BOARD
+	default "fennec_rk3288"
+
+config SYS_VENDOR
+	default "rockchip"
+
+config SYS_CONFIG_NAME
+	default "fennec_rk3288"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+
+endif