aarch64: Relaxed SEL combiner patterns for unpacked SVE FP unary operations

aarch64: Relaxed SEL combiner patterns for unpacked SVE FP unary operations

Extend the unary op/UNSPEC_SEL combiner patterns from SVE_FULL_F to SVE_F,
where the strictness value is SVE_RELAXED_GP.

gcc/ChangeLog:

	* config/aarch64/aarch64-sve.md (*cond_<optab><mode>_2_relaxed):
	Extend from SVE_FULL_F to SVE_F.
	(*cond_<optab><mode>_any_relaxed): Likewise.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/sve/unpacked_cond_fabs_1.c: New test.
	* gcc.target/aarch64/sve/unpacked_cond_fneg_1.c: Likewise.
	* gcc.target/aarch64/sve/unpacked_cond_frinta_1.c: Likewise.
	* gcc.target/aarch64/sve/unpacked_cond_frinta_2.c: Likewise.
	* gcc.target/aarch64/sve/unpacked_cond_frinti_1.c: Likewise.
	* gcc.target/aarch64/sve/unpacked_cond_frintm_1.c: Likewise.
	* gcc.target/aarch64/sve/unpacked_cond_frintp_1.c: Likewise.
	* gcc.target/aarch64/sve/unpacked_cond_frintx_1.c: Likewise.
	* gcc.target/aarch64/sve/unpacked_cond_frintz_1.c: Likewise.