mk_mmc.sh: bootloader is external

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

hwpack/imx6q-sabrelite.conf

@@ -2,8 +2,7 @@
 #        --dtb imx6q-sabrelite (Boundary Devices: Freescale i.MX6Q Board:supported)
 
 #Bootloader:
-conf_board="MX6QSABRELITE_D"
-conf_bootloader_in_flash="1"
+conf_bootloader_in_flash="enable"
 
 #Bootloader Partition:
 conf_boot_fstype="ext2"

hwpack/tegra124-jetson-tk1.conf

@@ -1,10 +1,8 @@
 #!/bin/bash
 #        --dtb tegra124-jetson-tk1 (NVIDIA Jetson TK1:supported)
 
-conf_board="tegra124-jetson-tk1"
-
 #Bootloader:
-conf_bootloader_in_flash="1"
+conf_bootloader_in_flash="enable"
 
 #Bootloader Partition:
 conf_boot_fstype="ext2"

mk_mmc.sh

@@ -803,13 +803,15 @@ extract_zimage () {
 generate_soc () {
 	echo "#!/bin/sh" > ${wfile}
 	echo "format=1.0" >> ${wfile}
-	echo "board=${conf_board}" >> ${wfile}
-	echo "" >> ${wfile}
-	echo "bootloader_location=${bootloader_location}" >> ${wfile}
-	echo "dd_spl_uboot_seek=${dd_spl_uboot_seek}" >> ${wfile}
-	echo "dd_spl_uboot_bs=${dd_spl_uboot_bs}" >> ${wfile}
-	echo "dd_uboot_seek=${dd_uboot_seek}" >> ${wfile}
-	echo "dd_uboot_bs=${dd_uboot_bs}" >> ${wfile}
+	if [ ! "x{conf_bootloader_in_flash}" = "xenable" ] ; then
+		echo "board=${conf_board}" >> ${wfile}
+		echo "" >> ${wfile}
+		echo "bootloader_location=${bootloader_location}" >> ${wfile}
+		echo "dd_spl_uboot_seek=${dd_spl_uboot_seek}" >> ${wfile}
+		echo "dd_spl_uboot_bs=${dd_spl_uboot_bs}" >> ${wfile}
+		echo "dd_uboot_seek=${dd_uboot_seek}" >> ${wfile}
+		echo "dd_uboot_bs=${dd_uboot_bs}" >> ${wfile}
+	fi
 	echo "" >> ${wfile}
 	echo "boot_fstype=${conf_boot_fstype}" >> ${wfile}
 	echo "" >> ${wfile}
@@ -1562,7 +1564,7 @@ echo "-----------------------------"
 check_root
 detect_software
 
-if [ ! "${conf_bootloader_in_flash}" ] ; then
+if [ ! "x{conf_bootloader_in_flash}" = "xenable" ] ; then
 	if [ "${spl_name}" ] || [ "${boot_name}" ] ; then
 		if [ "${USE_LOCAL_BOOT}" ] ; then
 			local_bootloader