xtensa: Make use of IN_RANGE macro where appropriate

xtensa: Make use of IN_RANGE macro where appropriate

No functional changes.

gcc/ChangeLog:

	* config/xtensa/constraints.md (M, O): Use the macro.
	* config/xtensa/predicates.md (addsubx_operand, extui_fldsz_operand,
	sext_fldsz_operand): Ditto.
	* config/xtensa/xtensa.cc (xtensa_simm8, xtensa_simm8x256,
	xtensa_simm12b, xtensa_uimm8, xtensa_uimm8x2, xtensa_uimm8x4,
	xtensa_mask_immediate, smalloffset_mem_p, printx, xtensa_call_save_reg,
	xtensa_expand_prologue): Ditto.
	* config/xtensa/xtensa.h (FUNCTION_ARG_REGNO_P): Ditto.