larith.asm (divmodhi4): Empty for 68HC12.

larith.asm (divmodhi4): Empty for 68HC12.

	* config/m68hc11/larith.asm (divmodhi4): Empty for 68HC12.
	(__mulsi3): Rewrite for 68HC12.
	* config/m68hc11/m68hc11.md (divmodhi4): Use idivs for 68HC12.
	Mark 'x' constraint with earlyclobber to prevent a
	RELOAD_FOR_OTHER_ADDRESS to go in it.
	(mulhi3_m68hc12): New pattern.
	(mulhi3_m68hc11): Rename of mulhi3.
	(mulhi3): New expand for 68HC12 optimisation.
	(umulhisi3, mulhisi3): New patterns for 68HC12.

From-SVN: r41841