Explicitly include linux/if.h to fix cross-compile error
Explicitly include linux/if.h to fix cross-compile error

When compiling bmon with the Linaro 2014.01 ARM toolchain
(gcc-linaro-arm-linux-gnueabihf-4.8-2014.01_linux) the following compile error occurs:

  in_netlink.c: In function ‘do_link’:
  in_netlink.c:688:53: error: ‘IFF_UP’ undeclared (first use in this function)

Fix it by explicitly including linux/if.h, where IFF_UP is defined.

Signed-off-by: Tobias Klauser <9249c549618448e4c699e8032ba6c7f0d7fd4b7f@distanz.ch>

Chocobo1/bmon,Chocobo1/bmon,tklauser/bmon,tklauser/bmon