The following patch series implements global registration of cpuidle
states, and also has the necessary data structure changes to
accommodate the per-cpu writable members of the cpuidle_states
structure.

Previous version of the series (V4) is at https://lkml.org/lkml/2011/4/28/312
This series applies on 3.0-rc1

Changes from previous version (V4):

1. Rebased the series to 3.0-rc1
2. Made same changes for Samsung exynos4 cpuidle driver registration

Tests done:
1. Compile tested for ARM using the following configs: da8xx_omapl_defconfig,
  exynos4_defconfig, kirkwood_defconfig, omap2plus_defconfig.

2. Boot tested on x86 nehalem with multiple C-states for both intel_idle
  and acpi_idle drivers.

Thanks
-Trinabh