[COMMITTED] aarch64: [PR103170] Fix aarch64_simd_dup<mode>

[COMMITTED] aarch64: [PR103170] Fix aarch64_simd_dup<mode>

The problem here is aarch64_simd_dup<mode> use
the vw iterator rather than vwcore iterator.  This causes
problems for the V4SF and V2DF modes. I changed both of
aarch64_simd_dup<mode> patterns to be consistent.

Committed as obvious after a bootstrap/test on aarch64-linux-gnu.

	PR target/103170

gcc/ChangeLog:

	* config/aarch64/aarch64-simd.md (aarch64_simd_dup<mode>):
	Use vwcore iterator for the r constraint output string.

gcc/testsuite/ChangeLog:

	* gcc.c-torture/compile/vector-dup-1.c: New test.