drm_hwcomposer: Add property that allows disabling of hardware scaling.

Set hwc.drm.scale_with_gpu property to 1 if composer hardware do not have scaling support.

That will force layers that require scaling to be merged by GPU, and allow other layers to be merged by DRM.

Signed-off-by: Roman Stratiienko roman.stratiienko@globallogic.com

Edited by Roman Stratiienko

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