drm/msm/sde: fix out of bounds memory access in sde kms

Remove the logging of SID mask in the event logs
as it logs two SID mask immaterial of the number of
SID mask available. These values are not used much
in debugging so it is safe to remove them.

Change-Id: I127d80871a238f284ad8103132cbc70125aede8a
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>