UPSTREAM: ASoC: rt5651: Only configure LDO voltage once at boot

Now that rt5651_set_bias_level(BIAS_OFF) no longer modifies the LDO
voltage selection bits, there is no need to set them each time we move
to standby. Instead configure them once at component-probe() time.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit 3d7719d3)
Signed-off-by: Samaga Prasanna Krishna <samaga.krishna@intel.corp-partner.google.com>

BUG=b:110025789
TEST=Test Audio use cases with full SOF 0.6 rebase release series applied.

Change-Id: Iac15011b798646e656e92882dbea4ac69e3bbfcb
Reviewed-on: https://chromium-review.googlesource.com/1353442


Commit-Ready: Curtis Malainey <cujomalainey@chromium.org>
Tested-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>