CHROMIUM: ALSA: hda/ca0132 - make initialization faster.

CHROMIUM: ALSA: hda/ca0132 - make initialization faster.

Remove unnecessary dspio_send() from dspio_write_wait().
Check dsp status before sleep and sleep for shorter periods.

BUG=chrome-os-partner:12307
TEST=build and install, check dmesg.

Signed-off-by: Chih-Chung Chang <chihchung@chromium.org>
Change-Id: I0e1d5b0d29c446f29beea704c1b2cca22524c142
Reviewed-on: https://gerrit.chromium.org/gerrit/32023
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Tested-by: Chih-Chung Chang <chihchung@chromium.org>
Commit-Ready: Chih-Chung Chang <chihchung@chromium.org>