irq: rename device_bind_irq_to_cpu to device_set_irq_affinity

This is more appropriate and consistent with other device irq
functions.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
xutils: break out promisc mode functions

Put them separately for the sake of maintanence.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
xutils: move device management functions out of xutils

Move those functions out so that they can be more easily maintained
in its separate file.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>