msm: mdss: allow setting min clk rate for mdp

Expose debugfs option to set minimum rate at which mdp clk should be
running, this can be used for performance tests.

Change-Id: Ibf3321c3e87cc5c51bf107eecb733ea65e86aea1
Signed-off-by: Adrian Salido-Moreno <adrianm@codeaurora.org>
3 files changed