ld9040: fix late resume

* added lcd regulator checks before late resume calls lcd init
* fixes upside-down lockscreen upon resume
* fixes lcd not waking upon resume

Change-Id: Ia152c3b61afff14404488ed8b46e7bf777728f12
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1
drivers/video/msm/lcdc_ld9040.cMerge branch 'cm-10.1' into marla