gralloc4: Add RAW PlaneLayoutComponentType

RAW12 and RAW16 buffers need a PlaneLayoutComponentType. Add a RAW
type so vendors don't have to add private RAW types.

Test: VtsHalGraphicsMapperV4_0
Bug: 149869426

Change-Id: Idf1fa609e3a1506c3c87af22d4c548cf1218fad1
1 file changed