msm: mdss: Dynamically enabling ESD

Allow the check_status interval time to be
configurable via /sys interface.
Allow the dsi_check_status function to be
enabled or disabled via /sys interface
Combine MDP3 & MDP5 code and separate
the platform specific code.

Change-Id: Ida14b96864353fb58606009bc00312f6f338c736
Signed-off-by: Raghavendra Ambadas <rambad@codeaurora.org>