[PATCH][GCC] arm: Fix the MVE ACLE vaddq_m polymorphic variants.

[PATCH][GCC] arm: Fix the MVE ACLE vaddq_m polymorphic variants.

Hello,

This patch fixes the MVE ACLE vaddq_m polymorphic variants by modifying the corresponding
intrinsic parameters and vaddq_m polymorphic variant's _Generic case entries in "arm_mve.h"
header file.

2020-06-04  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

gcc/
	* config/arm/arm_mve.h (__arm_vaddq_m_n_s8): Correct the intrinsic
	arguments.
	(__arm_vaddq_m_n_s32): Likewise.
	(__arm_vaddq_m_n_s16): Likewise.
	(__arm_vaddq_m_n_u8): Likewise.
	(__arm_vaddq_m_n_u32): Likewise.
	(__arm_vaddq_m_n_u16): Likewise.
	(__arm_vaddq_m): Modify polymorphic variant.

gcc/testsuite/
	* gcc.target/arm/mve/intrinsics/mve_vaddq_m.c: New test.