Aarch64: Add test for non-commutative SIMD intrinsic

This adds a test for non-commutative SIMD NEON intrinsics.
Specifically addp is non-commutative and has a bug in the current big-endian implementation.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/vector_intrinsics_asm.c: New test.