netfilter: fix function return types for 64bit

Fix functions to return ssize_t instead of int to match
prototypes.

Signed-off-by: Mark Hambleton <mahamble@broadcom.com>
Reviewed-by: Edwin Chan <echan@broadcom.com>
Reviewed-by: James King <jamesk@broadcom.com>
Reviewed-by: John Garry <jgarry@broadcom.com>
Reviewed-by: Mark Hambleton <mark.hambleton@broadcom.com>
Reviewed-by: Joyjit Nath <joyjit@broadcom.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2 files changed