netmap-modules: Modules may not have the same arch as userspace

Kernel modules may not have the same architecture as user space.  So we
tell INSANE_SKIP to skip checking the arch for the modules.  This is
consistent with other kernel modules and the kernel recipe.

Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>