sunxi: Add Wexler TAB7200 support

This patch add support for Wexler TAB7200 tablet.

The Wexler TAB7200 is a A20 based tablet with 7 inch display(800x480),
capacitive touchscreen(5 fingers), 1G RAM, 4G NAND, micro SD card slot,
mini HDMI port, 3.5mm audio plug, 1 USB OTG port and 1 USB 2.0 port.

Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 2c6a979..ef3c937 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -138,3 +138,8 @@
 M:	Paul Kocialkowski <contact@paulk.fr>
 S:	Maintained
 F:	configs/TZX-Q8-713B7_defconfig
+
+WEXLER-TAB7200 BOARD
+M:	Aleksei Mamlin <mamlinav@gmail.com>
+S:	Maintained
+F:	configs/Wexler_TAB7200_defconfig
diff --git a/configs/Wexler_TAB7200_defconfig b/configs/Wexler_TAB7200_defconfig
new file mode 100644
index 0000000..6c15dc8
--- /dev/null
+++ b/configs/Wexler_TAB7200_defconfig
@@ -0,0 +1,13 @@
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,USB_EHCI"
+CONFIG_FDTFILE="sun7i-a20-wexler-tab7200.dtb"
+CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:24,pclk_khz:33000,le:45,ri:210,up:22,lo:22,hs:1,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_POWER="PH8"
+CONFIG_VIDEO_LCD_BL_EN="PH7"
+CONFIG_VIDEO_LCD_BL_PWM="PB2"
++S:CONFIG_ARM=y
++S:CONFIG_ARCH_SUNXI=y
++S:CONFIG_MACH_SUN7I=y
++S:CONFIG_DRAM_CLK=384
++S:CONFIG_DRAM_ZQ=127
++S:CONFIG_DRAM_EMR1=4