msm: camera: ife: Re-enable auto clock gating

Auto clock gating was disabled to aid in certain debug scenarios.
However, for normal operation the expectation is for auto clock
gating to be enabled. The writes could be removed as enabled is the
default, but no harm in being explicit.

CRs-Fixed: 2584631
Change-Id: I63336d12b94f270c4962281e14e879a6207ea386
Signed-off-by: Fernando Pacheco <fpacheco@codeaurora.org>