CMD_UBI != MTD_PARTITIONS

Fix dependency goofage:  it should certainly be possible to have the
partition support without bringing in UBI commands.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Stefan Roese <sr@denx.de>

drivers/mtd/Makefile

@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	:= $(obj)libmtd.a
 
-COBJS-$(CONFIG_CMD_UBI) += mtdcore.o mtdpart.o
+COBJS-$(CONFIG_MTD_PARTITIONS) += mtdcore.o mtdpart.o
 COBJS-$(CONFIG_HAS_DATAFLASH) += at45.o
 COBJS-$(CONFIG_FLASH_CFI_DRIVER) += cfi_flash.o
 COBJS-$(CONFIG_FLASH_CFI_MTD) += cfi_mtd.o