The makefile includes need to be moved for everything to be
defined properly when the configure tests run.

The Ubuntu 12.04 x86_64 GCC and Linaro's 13.08 and newer AArch64
GCC's have the if_packet.h kernel header, but as of 13.12,
the Linaro AArch32 GCC does not.

Change-Id: I363c43fdb81b028f99aac77e15bff9462c87af4b
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>