mdss: dsi: check the clock lane status for overflow recovery sequence

Implement the overflow recovery sequence only when the clock lane
is not present in stop state. This will prevent from running
the recovery sequence for non fatal overflow errors.

Change-Id: I3a64c9b42d0b112d84f376ab67c6a63c1dc0256e
Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>