dt-bindings: remoteproc: qcom: Add power-domain bindings for Q6V5 PAS

Add power-domain bindings for Q6V5 PAS on MSM8974/MSM8996/QCS404/SDM845
SoCs.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Link: https://lore.kernel.org/r/0101016e80788d28-7370e0e3-7380-4cc7-9233-40b9fd76e8f3-000000@us-west-2.amazonses.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>