Update of our realtime patch to most recent rt patch 
patch-2.6.21-rc3-rt0.

As ususal, use recent OMAP git as starting point, then apply 
patch-2.6.21-rc3-rt0 [1] ignoring conflicts, and on top of 
this patch in attachment.

Note: The raw_spinlock in plat-omap/gpio.c is directly from 
patch-2.6.21-rc3-rt0. Not tested yet if this and the other 
OMAP related raw_spinlock conversions in 
patch-2.6.21-rc3-rt0 are really necessary.

Cheers,

Dirk

[1] http://people.redhat.com/mingo/realtime-preempt/