abb-sysctrl: allow to force power off

Even in charging.
mcde: merged samsung underflow patch but disabled it

It removes some code which seems to fix video snow-screen issue.

Signed-off-by: cocafe <cocafehj@gmail.com>
abb-fg: forgot to add moduleparam entry
Signed-off-by: cocafe <cocafehj@gmail.com>
abb-btemp: forgot to add moduleparam entry
Signed-off-by: cocafe <cocafehj@gmail.com>
defconfig: version tag 8.2 -> 8.3-beta