drm/msm/sde: avoid WARN_ON if rotator not enabled

Suppress the once only warning for targets that do not
have the rotator feature enabled.

CRs-Fixed: 2040978
Change-Id: I2080cbf82077002363df02e9b37ffbcfc194f168
Signed-off-by: Clarence Ip <cip@codeaurora.org>
1 file changed