I2S machine device has its own driver now. So, this change drops the
support for adding I2S machine device ACPI node from ACP driver.
BUG=b:157708581
Change-Id: I9069d92ae991e05fddcc7d45a2fd21e98c3b0de8
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43544
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>