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>
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 5b031c9..84be288 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -25,45 +25,45 @@
 
 LIB	:= $(obj)libnet.a
 
-COBJS-y += 3c589.o
-COBJS-y += bcm570x.o bcm570x_autoneg.o 5701rls.o
+COBJS-$(CONFIG_DRIVER_3C589) += 3c589.o
+COBJS-$(CONFIG_BCM570x) += bcm570x.o bcm570x_autoneg.o 5701rls.o
 COBJS-$(CONFIG_BFIN_MAC) += bfin_mac.o
-COBJS-y += cs8900.o
-COBJS-y += dc2114x.o
-COBJS-y += dm9000x.o
-COBJS-y += e1000.o
-COBJS-y += eepro100.o
-COBJS-y += enc28j60.o
-COBJS-y += fsl_mcdmafec.o
+COBJS-$(CONFIG_DRIVER_CS8900) += cs8900.o
+COBJS-$(CONFIG_TULIP) += dc2114x.o
+COBJS-$(CONFIG_DRIVER_DM9000) += dm9000x.o
+COBJS-$(CONFIG_E1000) += e1000.o
+COBJS-$(CONFIG_EEPRO100) += eepro100.o
+COBJS-$(CONFIG_ENC28J60) += enc28j60.o
+COBJS-$(CONFIG_FSLDMAFEC) += fsl_mcdmafec.o
 COBJS-$(CONFIG_GRETH) += greth.o
-COBJS-y += inca-ip_sw.o
-COBJS-y += ks8695eth.o
-COBJS-y += lan91c96.o
-COBJS-y += macb.o
-COBJS-y += mcffec.o
-COBJS-y += natsemi.o
+COBJS-$(CONFIG_INCA_IP_SWITCH) += inca-ip_sw.o
+COBJS-$(CONFIG_DRIVER_KS8695ETH) += ks8695eth.o
+COBJS-$(CONFIG_DRIVER_LAN91C96) += lan91c96.o
+COBJS-$(CONFIG_MACB) += macb.o
+COBJS-$(CONFIG_MCFFEC) += mcffec.o
+COBJS-$(CONFIG_NATSEMI) += natsemi.o
 ifeq ($(CONFIG_DRIVER_NE2000),y)
 COBJS-y += ne2000.o
 COBJS-$(CONFIG_DRIVER_AX88796L) += ax88796.o
 endif
-COBJS-y += netarm_eth.o
-COBJS-y += netconsole.o
-COBJS-y += ns7520_eth.o
-COBJS-y += ns8382x.o
-COBJS-y += ns9750_eth.o
-COBJS-y += pcnet.o
-COBJS-y += plb2800_eth.o
-COBJS-y += rtl8019.o
-COBJS-y += rtl8139.o
-COBJS-y += rtl8169.o
-COBJS-y += s3c4510b_eth.o
-COBJS-y += smc91111.o
-COBJS-y += smc911x.o
-COBJS-y += tigon3.o
-COBJS-y += tsec.o
-COBJS-y += tsi108_eth.o
-COBJS-y += uli526x.o
-COBJS-y += vsc7385.o
+COBJS-$(CONFIG_DRIVER_NETARMETH) += netarm_eth.o
+COBJS-$(CONFIG_NETCONSOLE) += netconsole.o
+COBJS-$(CONFIG_DRIVER_NS7520_ETHERNET) += ns7520_eth.o
+COBJS-$(CONFIG_NS8382X) += ns8382x.o
+COBJS-$(CONFIG_DRIVER_NS9750_ETHERNET) += ns9750_eth.o
+COBJS-$(CONFIG_PCNET) += pcnet.o
+COBJS-$(CONFIG_PLB2800_ETHER) += plb2800_eth.o
+COBJS-$(CONFIG_DRIVER_RTL8019) += rtl8019.o
+COBJS-$(CONFIG_RTL8139) += rtl8139.o
+COBJS-$(CONFIG_RTL8169) += rtl8169.o
+COBJS-$(CONFIG_DRIVER_S3C4510_ETH) += s3c4510b_eth.o
+COBJS-$(CONFIG_DRIVER_SMC91111) += smc91111.o
+COBJS-$(CONFIG_DRIVER_SMC911X) += smc911x.o
+COBJS-$(CONFIG_TIGON3) += tigon3.o bcm570x_autoneg.o 5701rls.o
+COBJS-$(CONFIG_TSEC_ENET) += tsec.o
+COBJS-$(CONFIG_TSI108_ETH) += tsi108_eth.o
+COBJS-$(CONFIG_ULI526X) += uli526x.o
+COBJS-$(CONFIG_VSC7385_ENET) += vsc7385.o
 COBJS-$(CONFIG_XILINX_EMAC) += xilinx_emac.o
 COBJS-$(CONFIG_XILINX_EMACLITE) += xilinx_emaclite.o