arm: improve vcreateq* tests

gcc/testsuite/ChangeLog:

	* gcc.target/arm/mve/intrinsics/vcreateq_f16.c: Improve test.
	* gcc.target/arm/mve/intrinsics/vcreateq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_s16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_s32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_s64.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_s8.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u64.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u8.c: Likewise.
10 files changed