Merge branch 'icc-msm8939' into icc-next

Split shared RPM based interconnect operation code and add support for
MSM8939 interconnect.

* icc-msm8939
  interconnect: qcom: Consolidate interconnect RPM support
  interconnect: qcom: qcs404: use shared code
  dt-bindings: interconnect: single yaml file for RPM interconnect drivers
  dt-bindings: interconnect: Add Qualcomm MSM8939 DT bindings
  interconnect: qcom: Add MSM8939 interconnect provider driver

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>