re PR target/45142 (split for *vec_set<mode>_0_sse2 incomplete)

	PR target/45142
	* config/i386/sse.md (vec_set<mode>_0): Do not set mode attribute for
	alternative 2.
	(vec_set<moode>_0 splitter): Use SSEMODE4S mode iterator to also
	split V4SI operands.

From-SVN: r162797