Fix rs6000 p10 fusion patterns with old attr type names

Fix rs6000 p10 fusion patterns with old attr type names

Somehow I managed to check in a version of genfusion.pl this
afternoon that was not updated to the new insn attr type names.
Committing as obvious and to make the code match what was posted
and reviewed.

gcc/
	* config/rs6000/genfusion.pl (gen_addadd): Fix incorrect attr types.
	* config/rs6000/fusion.md: Regenerate file.