Richard Purdie provided a patch to fix support for XScale1 processors (this
is the PMU version i never had access to initially), we weren't clearing
the overflow flags after an overflow interrupt had triggered resulting in
no additional interrupts occuring.  Additionally i've added basic power
management support.
Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>