[PATCH v2] powerpc: add documentation for HWCAPs

[Tulio Magno Quites Machado Filho]

Nicholas Piggin <npiggin@gmail.com> writes:

> +PPC_FEATURE_ARCH_2_05
> +    The processor supports the v2.05 userlevel architecture. Processors
> +    supporting later architectures also set this feature.

I don't think this bit is enabled when processors support later architectures.
In my tests, this behavior started only with v2.06, i.e. processors that
support v2.07 enable bit v2.06, but do not enable bit v2.05.

Otherwise, looks good to me.

-- 
Tulio Magno