I900 and I900B

Change-Id: If8a19c8bcc549f90ce0e867e0d5cc3834b915fb0
98SONIC_SHOCK: leave readahead the fuck alone

this conflicts with performance settings and isn't necessarily ideal for EVERY vanir device

Change-Id: I55fe0546736808e44316bed1a3c1b697c313c347
Merge remote-tracking branch 'upstream/kk44' into kk44