ne2000 driver: change #ifdef to Makefile conditional compilation

Signed-off-by: Wolfgang Denk <wd@denx.de>

drivers/net/Makefile

@@ -41,7 +41,7 @@ COBJS-y += lan91c96.o
 COBJS-y += macb.o
 COBJS-y += mcffec.o
 COBJS-y += natsemi.o
-COBJS-y += ne2000.o
+COBJS-$(CONFIG_DRIVER_NE2000) += ne2000.o
 COBJS-y += netarm_eth.o
 COBJS-y += netconsole.o
 COBJS-y += ns7520_eth.o

drivers/net/ne2000.c

@@ -80,8 +80,6 @@ Add SNMP
 #include <net.h>
 #include <malloc.h>
 
-#ifdef CONFIG_DRIVER_NE2000
-
 #define mdelay(n)       udelay((n)*1000)
 /* forward definition of function used for the uboot interface */
 void uboot_push_packet_len(int len);
@@ -851,4 +849,3 @@ int eth_send(volatile void *packet, int length) {
 	}
 	return 0;
 }
-#endif