Revert "Revert "mmc: msm_sdcc: fix pwrsave bit handling""

This reverts commit 94f0531227029becf6d86b7bbf4ff9e57a006c4d.

Change-Id: I56d37096df3857a184e49d9e8a2576509592ddbd
Merge "Revert "Revert "mmc: msm_sdcc: fix pwrsave bit handling""" into kk_2.7-stable