Since hwui output non-linear scRGB data in wide-gamut, use
the scRGB-nl extension instead of scRGB.
Bug: 62951776
Test: Manual, CtsGraphicsTestCases
Change-Id: Ifdb288e777d12b790b93624ccea9b4f1f6966e52
(cherry picked from commit 26b6a64953f29bbe6b10a5e948d11f47bd0611d6)