netfilter: uapi: Use UAPI definition of INT_MAX and INT_MIN

Using <limits.h> to gain access to INT_MAX and INT_MIN introduces a
dependency on a libc, which UAPI headers should not do.

Use the equivalent UAPI constants.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
3 files changed