BoardConfig: Legacy camera flags support

Change-Id: Ib26347d6f65f1eab9c12766dc41406f12fd97859
Signed-off-by: helicopter88 <johnlemon.lol@gmail.com>
carbon.mk:  Remove PA overlays

Change-Id: I48983841cbd3e41f9d789ddc8ea0e67521d42a5f
Signed-off-by: helicopter88 <johnlemon.lol@gmail.com>
system.prop: s/signalstrengthgsm/signalstrength

Change-Id: I688ac5bbd1d28df2903df5f33f13abc94c7d57e1
Signed-off-by: helicopter88 <johnlemon.lol@gmail.com>