sdm: Allow skip validate after idle power collapse

After HWC came back from idle power collapse, skip validation was
disabled with a cost of 2ms in ValidateDisplayInternal. Skip
validate can be allowed with current idle power collapse policy.

Bug: 144289346
Test: UiBenchJankTests#testDialogListFling
Change-Id: Ib647a4425c1a736fda4b0499326256af4d398a31
1 file changed