[PATCH] ppc64: allow timer based profiling on iseries

We used to have an iseries specific profiler that used /proc/profile.  Now
thats gone we can use the generic timer based stuff.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>