net: Remove duplicate const specifier

Jira: ZEP-1723

Change-Id: I0b305f7104a7a6248852846542b6894c86bfc1d8
Signed-off-by: Tomasz Bursztyka <[email protected]>

Author: Tomasz Bursztyka

include/net/net_l2.h

@@ -58,7 +58,7 @@ struct net_l2 {
 
 #define NET_L2_GET_NAME(_name) (__net_l2_##_name)
 #define NET_L2_DECLARE_PUBLIC(_name)					\
-	extern const struct net_l2 const NET_L2_GET_NAME(_name)
+	extern const struct net_l2 NET_L2_GET_NAME(_name)
 #define NET_L2_GET_CTX_TYPE(_name) _name##_CTX_TYPE
 
 extern struct net_l2 __net_l2_start[];
@@ -95,7 +95,7 @@ NET_L2_DECLARE_PUBLIC(IEEE802154_L2);
 extern struct net_l2 __net_l2_end[];
 
 #define NET_L2_INIT(_name, _recv_fn, _send_fn, _reserve_fn, _enable_fn)	\
-	const struct net_l2 const (NET_L2_GET_NAME(_name)) __used	\
+	const struct net_l2 (NET_L2_GET_NAME(_name)) __used		\
 	__attribute__((__section__(".net_l2.init"))) = {		\
 		.recv = (_recv_fn),					\
 		.send = (_send_fn),					\