6lowpan: use IEEE802154_ADDR_LEN instead of a magic number
6lowpan: use IEEE802154_ADDR_LEN instead of a magic number

Signed-off-by: Tony Cheneau <cde39171b49d430a5a06339dd414224ea4d3d861@amnesiak.org>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs