Update main thunderg (P50x) board file to be 3.0.31 compatible

Update the main LG thunderg (P50x series devices) board file
to be Linux 3.0.31 compatible

Change-Id: I5b856feec1cf58e365ecf7dc45c663ea83ed1a36
Signed-off-by: Rashed Abdel-Tawab <rashedabdeltawab@gmail.com>