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Add Intel Grand Ridge SoC C-states, which are C1, C1E, and C6S. The Grand Ridge SoC is built with modules, each module includes 4 cores (Crestmont microarchitecture). There is one L2 cache per module, shared between the 4 cores. There is no core C6 state, but there is C6S state, which has module scope: when all 4 cores request C6S, the entire module (4 cores + L2 cache) enters the low power state. Package C6 is not supported by Grand Ridge SoC. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>