* config/arm/arm-fpus.def: Replace booleans with feature flags.
	Update comment.
	* config/arm/arm.c (ARM_FPU): Update macro.
	* config/arm/arm.h (TARGET_NEON_FP16): Update feature test.
	(TARGET_FP16): Likewise.
	(TARGET_CRYPTO): Likewise.
	(TARGET_NEON): Likewise.
	(struct arm_fpu_desc): Remove fields neon, fp16 and crypto.  Add
	field features.

From-SVN: r226821