Kindle: Enable AutoSuspend plugin (#7612)
Kindle: Enable AutoSuspend plugin (#7612)

Kindles are not flagged canPowerOff, although that's technically not
entirely warranted, but sorta makes sense.

The Plugin already handles that sanely, and will only expose/honor the
suspend timer.
mwoz123/koreader,NiLuJe/koreader,poire-z/koreader,koreader/koreader,Frenzie/koreader,Frenzie/koreader,NiLuJe/koreader,poire-z/koreader,koreader/koreader