[PATCH][Aarch64][gcc] Fix vld2/3/4 on big endian systems

[PATCH][Aarch64][gcc] Fix vld2/3/4 on big endian systems

On behalf of Tamar Christina  <tamar.christina@arm.com>

gcc/

	* gcc/config/aarch64/aarch64-simd.md
	(aarch64_ld2<mode>_dreg_le): New.
	(aarch64_ld2<mode>_dreg_be): New.
	(aarch64_ld2<mode>_dreg): Removed.
	(aarch64_ld3<mode>_dreg_le): New.
	(aarch64_ld3<mode>_dreg_be): New.
	(aarch64_ld3<mode>_dreg): Removed.
	(aarch64_ld4<mode>_dreg_le): New.
	(aarch64_ld4<mode>_dreg_be): New.
	(aarch64_ld4<mode>_dreg): Removed.
	(aarch64_ld<VSTRUCT:nregs><VDC:mode>): Wrapper around _le, _be.

From-SVN: r239865