arm: pmu: support pmu/perf on OMAP4 - booting problem on pandaboard

[Avik Sil]

Hi,

I've applied the patches in 
http://lists.infradead.org/pipermail/linux-arm-kernel/2011-March/045283.html 
on top of a linaro kernel which resulted in booting problem on 
Pandaboard. It hangs inside the cti_unlock() while reading the 
LOCKSTATUS value, which happens when omap_init_pmu() is called. Please 
help me debug the issue.

Regards,
Avik