perf/x86/msr: Add Rocket Lake CPU support

Like Ice Lake and Tiger Lake, PPERF and SMI_COUNT MSRs are also
supported by Rocket Lake.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201019153528.13850-3-kan.liang@linux.intel.com