Add dummy memory controller clients to represent CPU clusters. They will
be used by the CPUFREQ driver to scale DRAM FREQ with the CPU FREQ.
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>