Blackfin: bf537-stamp: move CONFIG_POST handling to COBJS-$(...)

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

board/bf537-stamp/Makefile

@@ -29,9 +29,10 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS-y	:= $(BOARD).o post-memory.o cmd_bf537led.o
+COBJS-y	:= $(BOARD).o cmd_bf537led.o
 COBJS-$(CONFIG_CMD_EEPROM) += spi_flash.o
 COBJS-$(CONFIG_CMD_NAND)   += nand.o
+COBJS-$(CONFIG_POST)       += post-memory.o
 
 SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS-y))

board/bf537-stamp/post-memory.c

@@ -1,8 +1,6 @@
 #include <common.h>
 #include <asm/io.h>
 
-#ifdef CONFIG_POST
-
 #include <post.h>
 #include <watchdog.h>
 
@@ -318,4 +316,3 @@ int post_init_sdram(int sclk)
 }
 
 #endif				/* CONFIG_POST & CONFIG_SYS_POST_MEMORY */
-#endif				/* CONFIG_POST */