missing exports of csum_...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/m68k/lib/checksum.c b/arch/m68k/lib/checksum.c
index cf6bb51..6216f12 100644
--- a/arch/m68k/lib/checksum.c
+++ b/arch/m68k/lib/checksum.c
@@ -422,3 +422,4 @@
 	    );
     return(sum);
 }
+EXPORT_SYMBOL(csum_partial_copy_nocheck);