Update Boardconfig

Change-Id: I1822811829878f7c39a9c75b10dfe3d714f30347
Overlay for tablet layout

Change-Id: I3d79f8a04eb9bd8ad80b6c3c38b7e2202afe9a2b
Cflags : -fno-restrict-aliazing

Change-Id: I51b2d5a8bb1962b8fa69a5966fa0af1f8783bc59
Accelerometer calibration support

Change-Id: I264ea853d7d8f039b683b0f4e01fee6f0a7ea405
Kernel bk7-r03

Change-Id: I6efd319f8b0dac35e8130cea0db887ae92b8ca17