drivers: media: platform: ov5693 gpio warning

drivers: media: platform: ov5693 gpio warning

Changing reset gpio error message to warning as
reset gpio pin is not a requirement for this sensor.

Bug 200143488

Change-Id: Ibb878f537fc279bd728e86f9522c29e3fd04b621
Signed-off-by: David Wang <davidw@nvidia.com>
Reviewed-on: http://git-master/r/840627
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bhanu Murthy V <bmurthyv@nvidia.com>
Reviewed-by: Jihoon Bang <jbang@nvidia.com>
Reviewed-by: Jeetesh Burman <jburman@nvidia.com>
Tested-by: Jeetesh Burman <jburman@nvidia.com>