arm64: dts: qcom: sc7280: Fix Dmic no sound on villager-r1

Fix the DMIC no sound issue of villager-r1 by using "PP1800_L2C" as the
DMIC power source to match the hardware schematic.

This patch:
   1. set vdd-micb-supply to PP1800_L2C as the MIC Bias voltage regulator.
   2. In audio-routing, set VA DMIC01~VA DMIC03 to use the vdd-micb-supply
      setting.

Co-developed-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Signed-off-by: Judy Hsiao <judyhsiao@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220826065621.2255795-1-judyhsiao@chromium.org