hwc: Processing of HDMI connection request when WFD is active

  when HDMI is connected during active WFD session, teardown
  WFD and process HDMI connection request.

CRs-Fixed: 442226
Change-Id: I4b22ff9f1ab3175bab47babdaf040cb2289ebe4d
Merge "hwc: Processing of HDMI connection request when WFD is active"
Merge commit 'AU_LINUX_ANDROID_JB_1.9.6.04.03.00.143.058' into cm-10.2

Conflicts:
	libexternal/external.h