mmc: Move atmel_mci driver into drivers/mmc

This makes it easier to use the driver on other platforms.
Signed-off-by: NHaavard Skinnemoen <haavard.skinnemoen@atmel.com>
Acked-by: NJean-Chritophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

cpu/at32ap/Makefile

@@ -35,7 +35,6 @@ COBJS-y			+= exception.o
 COBJS-y			+= cache.o
 COBJS-y			+= interrupts.o
 COBJS-y			+= pio.o
-COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o
 
 SRCS	:= $(START-y:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))

drivers/mmc/Makefile

@@ -25,6 +25,8 @@ include $(TOPDIR)/config.mk
 
 LIB	:= $(obj)libmmc.a
 
+COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o
+
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))