AT91CAP9ADK: Move CONFIG_CMD_NAND to Makefile

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

board/atmel/at91cap9adk/Makefile

@@ -25,10 +25,12 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= at91cap9adk.o led.o nand.o
+COBJS-y	+= at91cap9adk.o
+COBJS-y	+= led.o
+COBJS-$(CONFIG_CMD_NAND) += nand.o
 
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
+SRCS    := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS    := $(addprefix $(obj),$(COBJS-y))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
 $(LIB):	$(obj).depend $(OBJS) $(SOBJS)

board/atmel/at91cap9adk/nand.c

@@ -29,8 +29,6 @@
 #include <asm/arch/gpio.h>
 #include <asm/arch/at91_pio.h>
 
-#ifdef CONFIG_CMD_NAND
-
 #include <nand.h>
 
 /*
@@ -70,4 +68,3 @@ int board_nand_init(struct nand_chip *nand)
 
 	return 0;
 }
-#endif