[PATCH] non-portable include in coda

fs/coda/upcall.c includes both asm/signal.h and linux/signal.h.

For one thing, the former is included by the latter; for another, on
some platforms it actually relies on the stuff included earlier in
linux/signal.h (but not in upcall.c).

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>