dt-bindings: spmi: Add qcom,bus-id

For PMIC arbiter version 7 and beyond we need to define if we are using
primary or secondary bus, so add a new property of qcom,bus-id

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221110100755.4032505-2-vkoul@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>