sound/oss/dmasound/dmasound_atari.c has static expand_bal
sound/oss/dmasound/dmasound_q40.c has static expand_bal
sound/oss/dmasound/dmasound_awacs.c has non-static expand_bal
sound/oss/dmasound/trans_16.c uses expand_bal from dmasound_awacs.c
all 4 include dmasound.h; extern for expand_bal used to be there,
which is a bloody bad idea, considering _atari and _q40.  Moved the
extern to trans_16.c.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>