Moved conditional compilation to Makefile for SK98 Ethernet driver

Brute-force removal of #ifdefs.  Didn't touch the code.
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/drivers/net/sk98lin/Makefile b/drivers/net/sk98lin/Makefile
index 8b83fae..f1bc4a7 100644
--- a/drivers/net/sk98lin/Makefile
+++ b/drivers/net/sk98lin/Makefile
@@ -29,24 +29,12 @@
 
 LIB	:= $(obj)libsk98lin.a
 
-COBJS-y += skge.o
-COBJS-y += skaddr.o
-COBJS-y += skgehwt.o
-COBJS-y += skgeinit.o
-COBJS-y += skgepnmi.o
-COBJS-y += skgesirq.o
-COBJS-y += ski2c.o
-COBJS-y += sklm80.o
-COBJS-y += skqueue.o
-COBJS-y += skrlmt.o
-COBJS-y += sktimer.o
-COBJS-y += skvpd.o
-COBJS-y += skxmac2.o
-COBJS-y += skcsum.o
+COBJS-$(CONFIG_SK98) += skge.o skaddr.o skgehwt.o skgeinit.o skgepnmi.o \
+	skgesirq.o ski2c.o sklm80.o skqueue.o skrlmt.o sktimer.o \
+	skvpd.o skxmac2.o skcsum.o
 #COBJS-y += skproc.o
 
-COBJS-y += uboot_skb.o
-COBJS-y += uboot_drv.o
+COBJS-$(CONFIG_SK98) += uboot_skb.o uboot_drv.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)