[ARM] export symbol csum_partial_copy_from_user

I've got the following linking error when building 2.6.21-mm2 on ARM:
	ERROR: "csum_partial_copy_from_user" [net/rxrpc/af-rxrpc.ko] undefined!
Linking fails because "csum_partial_copy_from_user" is not exported to
modules. This patch adds it to the list of exported symbols.
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/armksyms.c

@@ -76,6 +76,7 @@ EXPORT_SYMBOL(__const_udelay);
 
 	/* networking */
 EXPORT_SYMBOL(csum_partial);
+EXPORT_SYMBOL(csum_partial_copy_from_user);
 EXPORT_SYMBOL(csum_partial_copy_nocheck);
 EXPORT_SYMBOL(__csum_ipv6_magic);