coda: add static to functions in dir.c

coda_unlink, coda_rmdir, coda_readdir can all be static, the forward
declarations already were.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 file changed