configs: Migrate CONFIG_DFU_MMC again

A few platforms recently added in CONFIG_DFU_MMC under include/configs
rather than via the defconfig, update them.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/colibri_imx6_nospl_defconfig b/configs/colibri_imx6_nospl_defconfig
index bc8a4a2..5e9490b 100644
--- a/configs/colibri_imx6_nospl_defconfig
+++ b/configs/colibri_imx6_nospl_defconfig
@@ -42,6 +42,7 @@
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_DFU_MMC=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y