configs: engicam: Cleanup on mmcboot env

- Add tab space
- remove exctra 'mmc dev ${mmcdev}'

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>

include/configs/imx6qdl_icore.h

@@ -90,7 +90,7 @@
 #else
 # define CONFIG_BOOTCOMMAND \
 	"mmc dev ${mmcdev};" \
-	   "mmc dev ${mmcdev}; if mmc rescan; then " \
+	"if mmc rescan; then " \
 		"if run loadbootscript; then " \
 			"run bootscript; " \
 		"else " \

include/configs/imx6qdl_icore_rqs.h

@@ -69,7 +69,7 @@
 
 #define CONFIG_BOOTCOMMAND \
 	"mmc dev ${mmcdev};" \
-	   "mmc dev ${mmcdev}; if mmc rescan; then " \
+	"if mmc rescan; then " \
 		"if run loadbootscript; then " \
 			"run bootscript; " \
 		"else " \

include/configs/imx6ul_geam.h

@@ -88,8 +88,7 @@
 # define CONFIG_BOOTCOMMAND		"run nandboot"
 #else
 # define CONFIG_BOOTCOMMAND \
-	   "mmc dev ${mmcdev};" \
-	   "mmc dev ${mmcdev}; if mmc rescan; then " \
+	"if mmc rescan; then " \
 		"if run loadbootscript; then " \
 			"run bootscript; " \
 		"else " \