sun5i: Add defconfig and dts file for the Empire Electronix M712 tablet

Add a defconfig and dts file for the Empire Electronix M712 tablet, this
is a 7" A13 tablet, with micro-usb (otg), headphone and micro-sd slots on
the outside. It uses a Goodix gt811 touchscreen controller, a RTL8188CTV
wifi chip and a DMART06 (1238a4) accelerometer.

The dts file is identical to the one submitted to the upstream kernel.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/configs/Empire_electronix_m712_defconfig b/configs/Empire_electronix_m712_defconfig
new file mode 100644
index 0000000..224098f
--- /dev/null
+++ b/configs/Empire_electronix_m712_defconfig
@@ -0,0 +1,22 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_MACH_SUN5I=y
+CONFIG_DRAM_CLK=408
+CONFIG_MMC0_CD_PIN="PG0"
+CONFIG_USB0_VBUS_PIN="PG12"
+CONFIG_USB0_VBUS_DET="PG1"
+CONFIG_USB0_ID_DET="PG2"
+CONFIG_AXP_GPIO=y
+# CONFIG_VIDEO_HDMI is not set
+CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:45,ri:82,up:22,lo:22,hs:1,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_POWER="AXP0-0"
+CONFIG_VIDEO_LCD_BL_EN="AXP0-1"
+CONFIG_VIDEO_LCD_BL_PWM="PB2"
+CONFIG_DEFAULT_DEVICE_TREE="sun5i-a13-empire-electronix-m712"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=2"
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_FPGA is not set
+CONFIG_USB_MUSB_HOST=y