Blackfin: BF537-stamp: cleanup spi flash driver

This punts the old spi flash driver for a new/generalized one until the
common one can be integrated.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/board/bf533-stamp/Makefile b/board/bf533-stamp/Makefile
index 02c941b..14bb7a2 100644
--- a/board/bf533-stamp/Makefile
+++ b/board/bf533-stamp/Makefile
@@ -29,7 +29,7 @@
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o spi.o
+COBJS	:= $(BOARD).o spi_flash.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))