sunxi rtxx7x: Weed out some Makefile junk.
sunxi: disp: Fix HDMI build - requires HDMI audio.
Rename sun5i defconfigs.

 - add sun5i prefix
 - a12 -> a10s
Add kitchensink to defconfig.

v3 add separate a10s/a13 configs.
v4 split off rename into separate commit
Disable broken bcm4329
Disable broken picolcd.