tc_act: export uapi header file

This file is used by iproute2 and should be exported.
Signed-off-by: NStephen Hemminger <stephen@networkplumber.org>
Acked-by: NJiri Pirko <jiri@resnulli.us>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/uapi/linux/tc_act/Kbuild

@@ -7,3 +7,4 @@ header-y += tc_mirred.h
 header-y += tc_nat.h
 header-y += tc_pedit.h
 header-y += tc_skbedit.h
+header-y += tc_vlan.h