Adds .config for sun7i
Import A20 Olimex board linux .config file

Bring in support for ethernet, wifi, etc.
Revert "Import A20 Olimex board linux .config file"

This reverts commit 751c4dfbf4a1653acef949b5c2cd7b1b9bc6ff3d.

Well, I prefer to enable support explicitly rather
than just take Olimex A20 configs.
Enables various sunxi features

Ethernet, Realtek PHY, NAND, SUN4I_TS, I2C, GPIO.

G2D can't be enabled at this moment, because it
depends on ARCH_SUN4I; however, I checked out
how is it enabled in A20 Olimex kernel, the
dependencies actually patched as 4I || 7I, which
enables the G2D; will deal with that later.
Disable printing I2C bus messages

But it could be enabled for debugging purpose when
needed.  Buses available are: 0,1,2

Just too many console print output when enabled.
Update sunxi-boards to use lcd 4.3" for A20 Olimex
sunxi-boards: add fex files for lcd4.3 and hdmi
linux-sunxi: enable g2d for sun7i
.config: enable g2d for sun7i
G2D support has to be enabled as a module

fbturbo is trying to load it as module
sunxi-boards: use lcd4.3 as default display
sunxi-boards: increase fb0_framebuffer_num to 4

From 2
Add update-nand-contents.sh script

This will be needed to run after a new build
for NAND use.
Enable G2D as built-in
linux-sunxi:pull up to the latest
.config update after pulling up linux-sunxi
Cut all the fat

Remove tons of unnecessary kernel modules.
update-nand-content.sh:use one board olinuxino-a20
Remove olinuxino
Remove not used camera modules