config.gcc (mips*-sde-elf*): Handle mipsisa64r2*.

config.gcc (mips*-sde-elf*): Handle mipsisa64r2*.

gcc/
	* config.gcc (mips*-sde-elf*): Handle mipsisa64r2*.
	(mipsisa64r2-*-elf*, mipsisa64r2el-*-elf*): Add new cases to
	mipsisa*-*-elf*.  Handle mipsisa64r2*.
	* config/mips/sde.h (LINK_SPEC): Handle -mips64r2.
	* config/mips/t-isa3264 (MULTILIB_OPTIONS, MULTILIB_DIRNAMES): Add
	mips64r2.
	(MULTILIB_EXCLUSIONS): Add mips64r2/mfp64.
	* config/mips/t-sde (MULTILIB_OPTIONS, MULTILIB_DIRNAMES): Add
	mips64r2.
	(MULTILIB_EXCLUSIONS): Add mips64r2/mfp64.  Add mips64r2/mips16.
	Fix mips16 if mips64 or mips64r2 are multilib defaults.
	* config/mips/t-sdemtk (MULTILIB_OPTIONS, MULTILIB_DIRNAMES): Add
	mips64r2.

libgcc/
	* config.host (mipsisa64r2-*-elf* | mipsisa64r2el-*-elf*): New
	case.

From-SVN: r141976