jflte: add permissions for mmcblk1 scheduler; increase read ahead cache size

Change-Id: I6ba5fba6c161b69900c50c8497a67af84b601a66
Merge "jflte: add permissions for mmcblk1 scheduler; increase read ahead cache size" into cm-11.0
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0