atm: fix const assignment/discard warnings in the ATM networking driver

Fix const assignment/discard warnings in the ATM networking driver.

The lane2_assoc_ind() function needed its arguments changing to match changes
in the lane2_ops struct (patch 61c33e012964ce358b42d2a1e9cd309af5dab02b
"atm: use const where reasonable").

Signed-off-by: David Howells <[e-mail]>
Acked-by: Chas Williams <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/atm/mpc.c

···
 static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
 static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
 
-static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
-			  uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type);
+static const uint8_t *copy_macs(struct mpoa_client *mpc,
+				const uint8_t *router_mac,
+				const uint8_t *tlvs, uint8_t mps_macs,
+				uint8_t device_type);
 static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry);
 
-static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc);
+static void send_set_mps_ctrl_addr(const char *addr, struct mpoa_client *mpc);
 static void mpoad_close(struct atm_vcc *vcc);
 static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb);
 
···
  * lec sees a TLV it uses the pointer to call this function.
  *
  */
-static void lane2_assoc_ind(struct net_device *dev, uint8_t *mac_addr,
-			    uint8_t *tlvs, uint32_t sizeoftlvs)
+static void lane2_assoc_ind(struct net_device *dev, const u8 *mac_addr,
+			    const u8 *tlvs, u32 sizeoftlvs)
 {
 	uint32_t type;
 	uint8_t length, mpoa_device_type, number_of_mps_macs;
-	uint8_t *end_of_tlvs;
+	const uint8_t *end_of_tlvs;
 	struct mpoa_client *mpc;
 
 	mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */
···
  * plus the possible MAC address(es) to mpc->mps_macs.
  * For a freshly allocated MPOA client mpc->mps_macs == 0.
  */
-static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
-			  uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type)
+static const uint8_t *copy_macs(struct mpoa_client *mpc,
+				const uint8_t *router_mac,
+				const uint8_t *tlvs, uint8_t mps_macs,
+				uint8_t device_type)
 {
 	int num_macs;
 	num_macs = (mps_macs > 1) ? mps_macs : 1;
···
 	return arg;
 }
 
-static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc)
+static void send_set_mps_ctrl_addr(const char *addr, struct mpoa_client *mpc)
 {
 	struct k_message mesg;