include: net: Simplify the usage of __always_inline

Since commit de4d2e9e (" bitops: Add fls_long and __ffs64")
<linux/compiler.h> is included in include/linux/bitops.h,
which allows us to marking a function as 'always_inline' in a simpler
format.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NJoe Hershberger <joe.hershberger@ni.com>

include/net.h

@@ -181,8 +181,7 @@ int eth_unregister(struct eth_device *dev);/* Remove network device */
 
 extern struct eth_device *eth_current;
 
-static inline __attribute__((always_inline))
-struct eth_device *eth_get_dev(void)
+static __always_inline struct eth_device *eth_get_dev(void)
 {
 	return eth_current;
 }
@@ -200,14 +199,14 @@ static inline unsigned char *eth_get_ethaddr(void)
 /* Used only when NetConsole is enabled */
 int eth_is_active(struct eth_device *dev); /* Test device for active state */
 /* Set active state */
-static inline __attribute__((always_inline)) int eth_init_state_only(void)
+static __always_inline int eth_init_state_only(void)
 {
 	eth_get_dev()->state = ETH_STATE_ACTIVE;
 
 	return 0;
 }
 /* Set passive state */
-static inline __attribute__((always_inline)) void eth_halt_state_only(void)
+static __always_inline void eth_halt_state_only(void)
 {
 	eth_get_dev()->state = ETH_STATE_PASSIVE;
 }
@@ -657,7 +656,7 @@ int nc_input_packet(uchar *pkt, struct in_addr src_ip, unsigned dest_port,
 	unsigned src_port, unsigned len);
 #endif
 
-static inline __attribute__((always_inline)) int eth_is_on_demand_init(void)
+static __always_inline int eth_is_on_demand_init(void)
 {
 #ifdef CONFIG_NETCONSOLE
 	extern enum proto_t net_loop_last_protocol;