[AArch64] Use __aarch64_vget_lane* macros for getting the lane in some lane multiply intrinsics.

	* config/aarch64/arm_neon.h (vmuld_lane_f64): Use macro for getting
	the lane.
	(vmuld_laneq_f64): Likewise.
	(vmuls_lane_f32): Likewise.
	(vmuls_laneq_f32): Likewise.

	* gcc.target/aarch64/simd/vmul_lane_const_lane_1.c: New test.

From-SVN: r215553
4 files changed