interconnect: qcom: Add OSM L3 interconnect provider support

On some QTI SoCs, Operating State Manager (OSM) controls the
resources of scaling L3 caches. Add a driver to handle bandwidth
requests to OSM L3 from CPU on SDM845 SoCs.

Change-Id: If210b7d996428b66996092851b5987f870a650db
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Link: https://lore.kernel.org/r/20200227105632.15041-4-sibis@codeaurora.org


Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Git-commit: 5bc9900addafb99163232dbb970eb07661ae4178
Git-repo: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next


[vvegivad@codeaurora.org: Added aggreate function and minor modifcations as per the framework]
Signed-off-by: Veera Vegivada <vvegivad@codeaurora.org>