net/bluetooth/hci_conn.c: fix: warning: argument to 'sizeof' in 'memcpy' call is the same pointer type '__u8 *' as the destination

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
mvp_assert.h: gcc 4.8+ compatibility fixup

Signed-off-by: Paul Reioux <reioux@gmail.com>