msm: ais: Sync to latest mobile camera

Synching to mobile camera kernel from msm-4.14.

Up to commit 8eac6b02
("msm: camera: isp: Stop hw before setting HALT substate").

Change-Id: Iaa89e754e54824eee1c8057b61e27d979221ce8b
Signed-off-by: Terence Ho <terenceh@codeaurora.org>