video: sunxi: don't silently change any 16bpp video mode to ARGB1555

Even in spite of having fb0_format/fb1_format configured to any of
16bpp choices (ARGB1555, ARGB1555, RGBA5551, ARGB4444, RGB655, RGB565,
RGB556) in *.fex file, it was getting silently overrided with ARGB1555.

But RGB565 is generally best supported in software and has more
performance optimizations. It would be a shame if we could not use it.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Jari Helaakoski <tekkuli@gmail.com>
video: sunxi: fix green text in RGB565 framebuffer console

When the framebuffer is configured to use RGB565 format, the default
text color was showing up green instead of gray. This was caused by
incorrectly taking low bits instead of high bits when reducing color
components from 8 bits to anything lower.

=== before ===
[   42.610000] Fb_setcolreg,regno= 7,a=FF,r=AA,g=AA,b=AA, result=0000554A
                    (0x554A = 01010 101010 01010)

=== after ===
[   37.260000] Fb_setcolreg,regno= 7,a=FF,r=AA,g=AA,b=AA, result=0000AD55
                    (0xAD55 = 10101 101010 10101)

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Jari Helaakoski <tekkuli@gmail.com>
sunxi-usb: restore usb-manager's ability to enable/disable host controllers

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: Jari Helaakoski <tekkuli@gmail.com>