Remove CONFIG_SYS_MMC_IMG_LOAD_PART from CONFIG namespace

This option is used as part of configuring the default environment for a
number of platforms.  However, it is always set to 1 and the only time
it is part of Kconfig, it is used in a hard-coded manner.  Hard-code the
value in the environment instead.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/cl-som-imx7.h b/include/configs/cl-som-imx7.h
index 92770e8..a5bf6cc 100644
--- a/include/configs/cl-som-imx7.h
+++ b/include/configs/cl-som-imx7.h
@@ -49,7 +49,7 @@
 	"fdtaddr=0x83000000\0" \
 	"mmcdev_def="__stringify(CONFIG_SYS_MMC_DEV)"\0" \
 	"usbdev_def="__stringify(CONFIG_SYS_USB_DEV)"\0" \
-	"mmcpart=" __stringify(CONFIG_SYS_MMC_IMG_LOAD_PART) "\0" \
+	"mmcpart=1\0" \
 	"usbpart=" __stringify(CONFIG_SYS_USB_IMG_LOAD_PART) "\0" \
 	"doboot=bootz ${loadaddr} - ${fdtaddr}\0" \
 	"mmc_config=mmc dev ${mmcdev}; mmc rescan\0" \