make a local copy of the can/netlink.h. This way we don't have to include a
kernel include directory to build any more.
Signed-off-by: Luotao Fu <l.fu@pengutronix.de>
we now have can_set_bitrate and can_set_bitrate_samplepoint. The second is for
convenience for the developer. We tend to let the kernel use CIA recommnended
sample point value, which can_set_bitrate simply does
Signed-off-by: Luotao Fu <l.fu@pengutronix.de>