Revert "hwui: This code should only be enabled with QCOM_BSP"

This reverts commit 47fab2212992c5bdd42a610052ad2daab0b3145b.
Revert "Remove opaque check in GLRenderer when preparing dirty region."

This reverts commit 72a7fa9034c5c83cc6f9a0b1b301f31a7143b4ca.