[HWC3.0] Add capability BOOT_DISPLAY_CONFIG

This Capabiliy::BOOT_DISPLAY_CONFIG will make
the display boot display config optional on the HWC3.0

BUG: 216113429
Test: atest VtsHalGraphicsComposer3_TargetTest
Change-Id: I3be3383922fdd91e0bbccebd3c73e458753b749f
4 files changed