audio: hdmi: Find HDMI display dynamically

HDMI is not always assigned to display1, so the EDID path changes
accordingly. It's searched dynamically now (first match).

Additionally, the sysfs entry is also replaced to:
  /sys/devices/platform/omapdss/

Previous sysfs entry (/sys/devices/omapdss) is obsolete.

Change-Id: Ib8e4990353cc1eaf9b8e5c9460b74b5e4af6f165
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
3 files changed