Pend the change of active config until the next Screen On

Merge pending active config changes into sm7250/display:
1847add sdm: Do not allow to set active config while AOD
3b8e31c sdm: allow to set active config when AOD is on
fcdfd57 Delay handling mode switch request at power off
dfea92e composer: return pending config changes

Bug: 122348103
Bug: 128635447
Bug: 130274388
Bug: 138303350
Test: check dump_info when switch 60/90Hz during AoD and Off mode
    adb shell service call SurfaceFlinger 1035 i32 0/1
    cat /d/*/dump_info|grep Fps

Change-Id: I0afc5f1bca84935a76403278e8a017689fd9e7fb
2 files changed