net: Conditional COBJS inclusion of network drivers

Replace COBJS-y with appropriate driver config names.

Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

drivers/net/mcffec.c

@@ -27,8 +27,6 @@
 #include <common.h>
 #include <malloc.h>
 
-#ifdef CONFIG_MCFFEC
-
 #include <asm/fec.h>
 #include <asm/immap.h>
 
@@ -51,8 +49,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
-
 struct fec_info_s fec_info[] = {
 #ifdef CFG_FEC0_IOBASE
 	{
@@ -605,6 +601,3 @@ int mcffec_initialize(bd_t * bis)
 
 	return 1;
 }
-
-#endif				/* CONFIG_CMD_NET, FEC_ENET & NET_MULTI */
-#endif				/* CONFIG_MCFFEC */