[ARM] PR63870 Add qualifiers for NEON builtins

[ARM] PR63870 Add qualifiers for NEON builtins

2015-11-11  Charles Baylis  <charles.baylis@linaro.org>

	PR target/63870
	* config/arm/arm-builtins.c (enum arm_type_qualifiers): New enumerator
	qualifier_struct_load_store_lane_index.
	(builtin_arg): New enumerator NEON_ARG_STRUCT_LOAD_STORE_LANE_INDEX.
	(arm_expand_neon_args): New parameter. Remove ellipsis. Handle NEON
	argument qualifiers.
	(arm_expand_neon_builtin): Handle new NEON argument qualifier.
	* config/arm/arm.h (NEON_ENDIAN_LANE_N): New macro.

From-SVN: r230142