asoc: samsung: hdmi: Increase the initialization delay

asoc: samsung: hdmi: Increase the initialization delay

This patch increases the initialization wait time in the samsung hdmi
audio driver to 3 seconds. The wait time was previously 5ms which did
not leave enough time for the hdmi video driver to debounce hotplug and
initialize the hardware.

BUG=chromium:239641
TEST=Tested on snow, hotplug transferred audio between device & monitor

Change-Id: I86f7526923d77e753d0a5546fdeafbe7ee11e1fe
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/51118
Reviewed-by: Dylan Reid <dgreid@chromium.org>