config.gcc: Add armv6{k,z,zk}

config.gcc: Add armv6{k,z,zk}

	* config.gcc: Add armv6{k,z,zk}
	* config/arm/arm-cores.def: Add arm1176 and mpcore.
	* config/arm/tune.md: Regenerate.
	* config/arm/arm.c (FL_FOR_ARCH6K, FL_FOR_ARCH6Z, FL_FOR_ARCH6ZK):
	Define.
	(all_architectures): Add armv6k, armv6z, armv6zk.
	* config/arm/lib1funcs.asm: Recognise new arm arcitectures.
	* doc/invoke.texi: Document new arch and cpu values.

From-SVN: r88937