The point of these extern declarations is to provoke a link
error, so an architecture must not provide a symbol for them.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This is the complete set of new arch Score's files for linux.
Score instruction set support 16bits, 32bits and 64bits instruction,
Score SOC had been used in game machine and LCD TV.
Signed-off-by: NChen Liqin <liqin.chen@sunplusct.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>