sunxi: Add mk802 board / defconfig

The mk802 is the "classic" Allwinner A10 based hdmi tv-stick, it features
512M or 1G RAM, 4G nand, a mini-hdmi female connector, USB-A receptacle,
mini-usb receptacle (OTG) and USB-wifi. Somewhat unique the mk802 does not
use the AXP209 pmic, it does not have a pmic at all.

For more details see: http://linux-sunxi.org/Rikomagic_mk802



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

board/sunxi/MAINTAINERS

@@ -9,6 +9,7 @@ F:	configs/Cubieboard_defconfig
 F:	configs/Mele_A1000_defconfig
 F:	configs/Mele_M3_defconfig
 F:	configs/Mini-X_defconfig
+F:	configs/mk802_defconfig
 F:	include/configs/sun5i.h
 F:	configs/A10s-OLinuXino-M_defconfig
 F:	configs/A13-OLinuXino_defconfig

configs/mk802_defconfig

+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="USB_EHCI"
+CONFIG_FDTFILE="sun4i-a10-mk802.dtb"
+CONFIG_USB2_VBUS_PIN="PH12"
++S:CONFIG_ARM=y
++S:CONFIG_ARCH_SUNXI=y
++S:CONFIG_MACH_SUN4I=y
++S:CONFIG_DRAM_CLK=360
++S:CONFIG_DRAM_ZQ=123
++S:CONFIG_DRAM_EMR1=0