Allow old gralloc implementations to skip P010 support.

P010 is mandated for vendor versions that are at least api level 33.
Gralloc versions below this may not support P010 due to lack of
enforcement, but tests for already-shipping devices must still pass.

Bug: 220360702
Test: VtsHalGraphicsMapperV3_0TargetTest
Change-Id: I7ba268713bada133491813aa3c9bd87fdecd2fef