MIPS: mark R4K clockevent device with CLOCK_EVT_FEAT_C3STOP
MIPS: mark R4K clockevent device with CLOCK_EVT_FEAT_C3STOP

When a core enters a clock off or power down state its CP0 counter will
be stopped along with it.

Signed-off-by: Paul Burton <85f1bffadddedccfafc0ae065a06aa636075387f@imgtec.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs