dt-bindings: soc: qcom: smd-rpm: Add MSM8226 compatible

Add the dt-binding for the rpm on the Qualcomm MSM8226 SoC platform.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bartosz Dudziak <bartosz.dudziak@snejp.pl>
Link: https://lore.kernel.org/r/20210502122027.9351-2-bartosz.dudziak@snejp.pl


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