gcc/
	* config/nds32/nds32.h (FIRST_PSEUDO_REGISTER): Modify.
	(FIXED_REGISTERS): Reserve more register numbers.
	(CALL_USED_REGISTERS): Likewise.
	(REG_ALLOC_ORDER): Likewise.
	(REG_CLASS_CONTENTS): Likewise.
	(REGISTER_NAMES): Likewise.

Co-Authored-By: Monk Chiang <sh.chiang04@gmail.com>

From-SVN: r254854