msm: mdss: check for clock lane HS setting before overflow recovery

When the clock lane is forced to HS always, it is possible that
the clock lane status iS HS and data lanes are in LP mode. We need
not perform data lane HS overflow recovery. Add a check for clock
lane HS setting in such cases.

Change-Id: I2a4cc3bba90ae6a48183810717318fac450775bb
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>