[Patch AArch64_be] Fix some vec_concat big-endian confusions

[Patch AArch64_be] Fix some vec_concat big-endian confusions

	* config/aarch64/aarch64-simd.md (move_lo_quad_internal_<mode>): New.
	(move_lo_quad_internal_be_<mode>): Likewise.
	(move_lo_quad_<mode>): Convert to define_expand.
	(aarch64_simd_move_hi_quad_<mode>): Gate on BYTES_BIG_ENDIAN.
	(aarch64_simd_move_hi_quad_be_<mode>): New.
	(move_hi_quad_<mode>): Use appropriate insn for BYTES_BIG_ENDIAN.
	(aarch64_combinez<mode>): Gate on BYTES_BIG_ENDIAN.
	(aarch64_combinez_be<mode>): New.
	(aarch64_combine<mode>): Convert to define_expand.
	(aarch64_combine_internal<mode>): New.
 	(aarch64_simd_combine<mode>): Remove bogus RTL description.

From-SVN: r212298