perf/x86/rapl: Add AMD Fam19h RAPL support

Family 19h RAPL support did not change from Family 17h; extend
the existing Fam17h support to work on Family 19h too.

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200908214740.18097-8-kim.phillips@amd.com