RE: [MIPS] RFA: Use new rtl iterators in mips_rewrite_small_data

[Matthew Fortune]

> gcc/
>       * config/mips/mips.c (mips_rewrite_small_data_1): Take the context
>       as a parameter instead of the containing MEM.  Iterate over all
>       subrtxes.  Don't return a value.
>       (mips_rewrite_small_data): Update call accordingly.

OK