msm_fb: [HDMI_COMPLIANCE] Reset DDC control logic upon failure

This change toggles the HDCP_DDC_CTRL_0 register to reset the
DDC control logic, in effect enabling the DDC controller logic to
continue to function after hitting a DDC failure. This is needed
to pass HDCP compliance on MSM8960.

Change-Id: Ic11a4d4de375aab9b3948cbde7eda5aca7aefbd6
CRs-Fixed: 321221
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>