Resume HDMI audio after suspend

Resume HDMI audio after suspend

HDMI Audio was not getting resumed after suspend. This was
because of changes in early_suspend which was not checking if HDMI
audio is busy and calling DPMS_OFF.

Also there was no check for HDMI busy status check in
psb_runtime_idle, but in psb_runtime_suspend itself.

There is a JIRA BUG: ANDROID-1553 for local MIPI fails to turn back
on from a DPMS off/on cycle if HDMI audio returns busy to disallow
system suspend. Once ANDROID-1553 is fixed, the expectation is to
turn off MIPI but keep display island on if there is active audio
playback over HDMI.
Refer Jira bug# Android-1553 for more details.

There is still HDMI Audio noise during suspend/resume, which
is a known issue.

Signed-off-by: Mohan Kandra <mohan.b.kandra@intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>