mips.c: Include rtl-iter.h.

mips.c: Include rtl-iter.h.

gcc/
	* config/mips/mips.c: Include rtl-iter.h.
	(mips_small_data_pattern_1): Take an rtx rather than an rtx pointer.
	Take the context as a parameter instead of the containing MEM.
	Iterate over all subrtxes.
	(mips_small_data_pattern_p): Update call accordingly.

From-SVN: r216707