[Buildroot] [PATCH 0 of 3] Fix oprofile build on powerpc

[Thomas De Schampheleire]

Hi,

Since the upstep of oprofile to 0.9.8, the powerpc build was broken.
This series fixes this problem.

As the last patch indicates, this is compile tested on x86 and powerpc,
but not runtime-tested.

Best regards,
Thomas