msm: camera: Limit prints in default cases

Change pr_err to pr_err_ratelimited in default
case prints of userspace ioctl. pr_err would
keep printing when passing wrong parameters in ioctl
which will cause watchdog reset.

Change-Id: If452c7a7d935a2d955682bbde9b78613bd703b7e
CRs-Fixed: 576541
Signed-off-by: Yiduo Wang <yiduow@codeaurora.org>