* config/avr/avr.c (avr_mcu_t): Add atmega16hvb, atmega32hvb,
	atmega4hvd, atmega8hvd, atmega64c1, atmega64m1, atmega16u4 and
	atmega32u6 devices.
	* config/avr/avr.h (LINK_SPEC, CRT_BINUTILS_SPECS): (Ditto.).
	* config/avr/t-avr (MULTILIB_MATCHES): (Ditto.).

From-SVN: r141799