msm_fb: hdmi: Turn on switch dev when connect to HDMI

Audio is not routed to TV after deep sleep and resume.
Userspace is dependent on switch device to indentify audio
route. When HDMI is turned on, this switch needs to be turned
on as well.

CRs-Fixed: 377159
Change-Id: I7faaad5ff772ad2045876cc084aa71d120b77139
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>