arm64: dts: qcom: pmi632: Add PBS client and use in LPG node

With SDAM + PBS the LPG driver can configure the LED pattern in
hardware.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20240205-pmi632-ppg-v1-2-e236c95a2099@fairphone.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>