drm/bridge: anx7625: Update audio status while detecting

Previously, the audio status was not updated during detection, leading
to a persistent audio despite hot plugging events. To resolve this
issue, update the audio status during detection.

Fixes: 566fef12 ("drm/bridge: anx7625: add HDMI audio function")
Signed-off-by: Hsin-Te Yuan <yuanhsinte@chromium.org>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240416-anx7625-v3-1-f916ae31bdd7@chromium.org