[PATCH v5 2/2] aarch64: helper function to access hwcap elements in ifunc resolver

[Florian Weimer]

* Yury Khrustalev:

> Add a portable way to access HWCAP elements via the parameter(s)
> passed to an ifunc resolver checking the _IFUNC_ARG_HWCAP bit in
> the first parameter and size of the buffer in the second parameter.
>
> Note that 0 is return when the requested element is not available
> or does not correspond to a valid AT_HWCAP{,2,...} value.

The commit message should mention the name of the new helper function.

There is no actual IFUNC resolver test using this function.

Thanks,
Florian