Update scripts to make logos

There are two scripts, one to make the logo for psplash, and another to
make the logo for the kernel. Be aware that you can adjust the number of
colors used in the script so that high color images look better.

Signed-off-by: Stephano Cetola <scetola@reachtech.com>
Update the readme file

The readme file was getting a bit out of date. This should help to make
it a bit more usefull.

Signed-off-by: Stephano Cetola <scetola@reachtech.com>
Remove RTC and add PCAP display

The RTC needs to be removed in the machine config with a "BACKFILL"
option. The defconfig also needed to be updated to include the Siltronix
PCAP display.

Signed-off-by: Stephano Cetola <scetola@reachtech.com>
Cleanup defconfig for g2c-lite

Remove the HID driver as well as the security stuff.

Signed-off-by: Stephano Cetola <scetola@reachtech.com>