CHROMIUM: sound: soc/mediatek: Use udelay instead of mt8196_aud_delay

Mediatek implement their own udelay inside the driver, which is not
compatible with 32-bit. The implementation pretty similar to the udelay
implement in arm64. Change to using general kernel function.

BUG=b:314021233
BUG=b:372561093
BUG=b:378823932
BUG=b:375953604
BUG=b:357736343
BUG=b:314021350
BUG=b:357753807
BUG=b:369287582
BUG=b:377339114
TEST=build and boot to shell;play audio
UPSTREAM-TASK=b:379039241

Change-Id: Ide2b290ca61e1c8f25234eb04782e027b6643548
Signed-off-by: Hsin-Te Yuan <yuanhsinte@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/6178930


Reviewed-by: Yu-Che Cheng <giver@chromium.org>
Tested-by: Yu-Che Cheng <giver@chromium.org>
Signed-off-by: Hubert Mazur <hmazur@google.com>