oprofile: update patch for powerpc64

oprofile: update patch for powerpc64

This is a more appropriate follow up patch from upstream. Also,
only powerpc64 requires libpfm4 currently for this specific
version of oprofile (x86, sparc can make use of libpfm but
don't make use of it here)

Additionally, this patch from upstream requires some more
patches to be pulled into oprofile

(From OE-Core rev: 2792e1f6a1d8969e0891334e6cd4e04f84f7e9ff)

Signed-off-by: Matthew McClintock <msm@freescale.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>