powerpc/perf/hv-24x7: Simplify extracting counter from result buffer
powerpc/perf/hv-24x7: Simplify extracting counter from result buffer

Simplify code that extracts a 24x7 counter from the HCALL's result buffer.

Suggested-by: Joe Perches <16a9a54ddf4259952e3c118c763138e83693d7fd@perches.com>
Signed-off-by: Sukadev Bhattiprolu <2ac48ee9b8f6042694a5d86ef56b8e10fe5327d1@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <864f124608374e06e4da1fa5d2e47ed839b95411@ellerman.id.au>

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