* config/avr/avr.md (ashrqi3): Split alternative "n"
	into its remaining parts C03, C04, C05, C06, C07 and describe
	impact in CC by attribute "cc" appropriately.
	* config/avr/avr.c (notice_update_cc): Clean-up: Don't patch CC0
	by digging RTX.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@179241 138bc75d-0d04-0410-961f-82ee72b054a4