sunxi: Add new Chuwi V7 CW0825 board / defconfig

The Chuwi V7 is an A10 (sun4i) based tablet with 1G of RAM, 16G of nand flash,
microsd slot, 7" 1024x768 lvds ips panel, mini hdmi out, headphones out,
stereo speakers, front & back camera and usb wifi.

It is clearly marked "CHUWI", "V7" and "Model: CW0825" on the back of the
tablet.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

board/sunxi/MAINTAINERS

@@ -5,6 +5,7 @@ F:	board/sunxi/
 F:	include/configs/sun4i.h
 F:	configs/A10-OLinuXino-Lime_defconfig
 F:	configs/ba10_tv_box_defconfig
+F:	configs/Chuwi_V7_CW0825_defconfig
 F:	configs/Cubieboard_defconfig
 F:	configs/Mele_A1000_defconfig
 F:	configs/Mele_M3_defconfig

configs/Chuwi_V7_CW0825_defconfig

+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER"
+CONFIG_FDTFILE="sun4i-a10-chuwi-v7-cw0825.dtb"
+CONFIG_USB_MUSB_SUNXI=y
+CONFIG_USB0_VBUS_PIN="PB9"
+CONFIG_VIDEO_LCD_MODE="x:1024,y:768,depth:24,pclk_khz:51000,le:19,ri:300,up:6,lo:31,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"
+CONFIG_VIDEO_LCD_SPI_CS="PA0"
+CONFIG_VIDEO_LCD_SPI_SCLK="PA1"
+CONFIG_VIDEO_LCD_SPI_MOSI="PA2"
+CONFIG_VIDEO_LCD_PANEL_HITACHI_TX18D42VM=y
++S:CONFIG_ARM=y
++S:CONFIG_ARCH_SUNXI=y
++S:CONFIG_MACH_SUN4I=y
++S:CONFIG_DRAM_CLK=408
++S:CONFIG_DRAM_ZQ=123
++S:CONFIG_DRAM_EMR1=4