avr.c (avr_mcu_types): Remove devices that were once expected, but don't really exist...

avr.c (avr_mcu_types): Remove devices that were once expected, but don't really exist...

	* config/avr/avr.c (avr_mcu_types): Remove devices that were once
	expected, but don't really exist: atmega83, atmega85, attiny10.
	* config/avr/avr.h (LINK_SPEC): Update to use the new avr[1-5] ld
	emulations for all devices.
	(CRT_BINUTILS_SPECS): Remove atmega83, atmega85, attiny10.
	* config/avr/t-avr (MULTILIB_MATCHES): Remove atmega83, atmega85.

From-SVN: r54146