ANDROID: vendor_hooks: Add hook for partial_init

Need this vendor hook to support patial init functionality. This hook needs to be restricted as the additional vendor handling need to perform operations (such as wait_for_completion) in non-atomic context.
One of the main functionality of Partial init feature is to reduce latency during resume.

Bug: 231654364
Link: https://lore.kernel.org/lkml/ea318551ec0b43429ce47bfac9ebf285@quicinc.com/#r



Change-Id: Ia1cb0b7173db3318d2d6686f4bd4719f3cfefd8b
Signed-off-by: kamasali <quic_kamasali@quicinc.com>