[ARM][PATCH]: Add MVE ACLE intrinsics vbicq_n_* polymorphic variant support.

[ARM][PATCH]: Add MVE ACLE intrinsics vbicq_n_* polymorphic variant support.

For the following MVE ACLE intrinsics, polymorphic variant support is missing on the trunk.

vbicq_n_s16, vbicq_n_s32, vbicq_n_u16 and vbicq_n_u32.

This patch add the polymorphic variant support for above intrinsics.

Please refer to M-profile Vector Extension (MVE) intrinsics [1]  for more details.
[1] https://developer.arm.com/architectures/instruction-sets/simd-isas/helium/mve-intrinsics

2020-03-31  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	* config/arm/arm_mve.h (vbicq): Define MVE intrinsic polymorphic
	variant.
	(__arm_vbicq): Likewise.

2020-03-31  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	* gcc.target/arm/mve/intrinsics/vbicq_n_s16.c: Modify.
	* gcc.target/arm/mve/intrinsics/vbicq_n_s32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vbicq_n_u16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vbicq_n_u32.c: Likewise.