msm_fb: display: Update mdp clock counter for unsuccessful probes

If a panel probe does not succeed, call mdp_clk_ctrl to maintain
mdp_clk_cnt counter else mismatch in counter results in mdp clock
to never go off in cases like suspend-resume.

CRs-Fixed: 385560
Change-Id: I4ca54b051af98e823dc7f3ff7b9bcb960532c7e8
Signed-off-by: Mayank Chopra <makchopra@codeaurora.org>