msm/sde/rotator: reduce log level of sde_rotator_footswitch_ctrl

Reduce the log level when handling a consecutive call to
sde_rotator_footswitch_ctrl as it is not really an
error.

Change-Id: Id7730987791775d1c576ce38c8dc6e5b2b020aa3
Signed-off-by: Amine Najahi <anajahi@codeaurora.org>