powerpc/perf: Change type of the bhrb_users variable
powerpc/perf: Change type of the bhrb_users variable

This patch just changes data type of bhrb_users variable from
int to unsigned int because it never contains a negative value.

Reported-by: Daniel Axtens <cf1af486034ab0119a20f38a060e40da25f4cea3@axtens.net>
Signed-off-by: Anshuman Khandual <5cc840ad174e421baefc61e26aff2d5fb1883945@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