Blackfin: convert old boards to use COBJS-y Makefile style

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/board/bf533-stamp/Makefile b/board/bf533-stamp/Makefile
index 5b5e199..a03fe89 100644
--- a/board/bf533-stamp/Makefile
+++ b/board/bf533-stamp/Makefile
@@ -29,12 +29,13 @@
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS-y               := $(BOARD).o spi_flash.o
+COBJS-y	:= $(BOARD).o
+COBJS-$(CONFIG_CMD_EEPROM) += spi_flash.o
 COBJS-$(CONFIG_VIDEO) += video.o
 
-SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS-y))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS-y))
 
 $(LIB):	$(obj).depend $(OBJS) $(SOBJS) $(obj)u-boot.lds
 	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)