disp: msm: sde: update misr check to configure misr in secure UI

This change updates misr checks so that misr can be
configured during secure display session. In the current
code, misr_reconfigure flag is set only when accessing
through debugfs node.

Change-Id: Ic3a8316a4881551da3f0f340f6ef5ae3fbe4913f
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>