aarch64: Add missing simd requirements for INS [PR118531]

aarch64: Add missing simd requirements for INS [PR118531]

In g:b096a6ebe9d9f9fed4c105f6555f724eb32af95c I'd forgotten
to gate some uses of INS on TARGET_SIMD.

gcc/
	PR target/118531
	* config/aarch64/aarch64.md (*insv_reg<mode>_<SUBDI_BITS>)
	(*aarch64_bfi<GPI:mode><ALLX:mode>_<SUBDI_BITS>)
	(*aarch64_bfidi<ALLX:mode>_subreg_<SUBDI_BITS>): Add missing
	simd requirements.

gcc/testsuite/
	* gcc.target/aarch64/ins_bitfield_1a.c: New test.
	* gcc.target/aarch64/ins_bitfield_3a.c: Likewise.
	* gcc.target/aarch64/ins_bitfield_5a.c: Likewise.