ls1028a: use default scan_dev_for_boot

scan_dev_for_efi is supposed to be called from scan_dev_for_boot.
However this call is missing for ls1028ardb and ls1028aqds boards. As
a result EFI boot doesn’t work. Fix this issue by removing custom
definition of scan_dev_for_boot and use the default definition
instead.
Signed-off-by: NMian Yousaf Kaukab <ykaukab@suse.de>
Reviewed-by: andy.tang@nxp.com
Reviewed-by: NPriyanka Jain <priyanka.jain@nxp.com>

include/configs/ls1028aqds.h

@@ -129,13 +129,6 @@
 			"run scan_dev_for_boot; " \
 		  "fi; " \
 		"done\0" \
-	"scan_dev_for_boot=" \
-		"echo Scanning ${devtype} " \
-				"${devnum}:${distro_bootpart}...; " \
-		"for prefix in ${boot_prefixes}; do " \
-			"run scan_dev_for_scripts; " \
-		"done;" \
-		"\0" \
 	"boot_a_script=" \
 		"load ${devtype} ${devnum}:${distro_bootpart} " \
 			"${scriptaddr} ${prefix}${script}; " \

include/configs/ls1028ardb.h

@@ -112,13 +112,6 @@
 			"run scan_dev_for_boot; "            \
 		  "fi; "                                   \
 		"done\0"                                   \
-	"scan_dev_for_boot="				  \
-		"echo Scanning ${devtype} "		  \
-				"${devnum}:${distro_bootpart}...; "  \
-		"for prefix in ${boot_prefixes}; do "	  \
-			"run scan_dev_for_scripts; "	  \
-		"done;"					  \
-		"\0"					  \
 	"boot_a_script="				  \
 		"load ${devtype} ${devnum}:${distro_bootpart} "  \
 			"${scriptaddr} ${prefix}${script}; "    \