dt-bindings: msm: Rename cache-controller to system-cache-controller

DT schema checks for the node name 'cache-controller' and enforces
that there has to be a cache-level associated with it. But LLCC is
a system cache and does not have a cache-level property and hence
the dt binding check fails. So let us rename the LLCC cache-controller
to system-cache-controller which is the proper description and also
makes the schema happy.

Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Link: https://lore.kernel.org/r/83394ae827ce7c123228b749bcae2a2c470e88a4.1573814758.git.saiprakash.ranjan@codeaurora.org


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