cleanup the older boot.scr boot args

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

mk_mmc.sh

@@ -497,8 +497,7 @@ esac
 }
 
 function boot_files_template {
-
-cat > ${TEMPDIR}/bootscripts/netinstall.cmd <<netinstall_boot_cmd
+	cat > ${TEMPDIR}/bootscripts/netinstall.cmd <<-__EOF__
 		SCR_FB
 		SCR_TIMING
 		SCR_VRAM
@@ -507,31 +506,31 @@ setenv mmcroot /dev/ram0 rw
 		setenv bootcmd 'fatload mmc 0:1 UIMAGE_ADDR uImage.net; fatload mmc 0:1 UINITRD_ADDR uInitrd.net; bootm UIMAGE_ADDR UINITRD_ADDR'
 		setenv bootargs console=\${console} root=\${mmcroot} VIDEO_DISPLAY
 		boot
-netinstall_boot_cmd
 
-cat > ${TEMPDIR}/bootscripts/normal.cmd <<normal_boot_cmd
+	__EOF__
+
+	cat > ${TEMPDIR}/bootscripts/normal.cmd <<-__EOF__
 		SCR_FB
 		SCR_TIMING
 		SCR_VRAM
 		setenv console SERIAL_CONSOLE
 		setenv optargs VIDEO_CONSOLE
-setenv mmcroot FINAL_PART ro
+		setenv mmcroot /dev/mmcblk0p2 ro
 		setenv mmcrootfstype FINAL_FSTYPE rootwait fixrtc
 		setenv bootcmd 'fatload mmc 0:1 UIMAGE_ADDR uImage; fatload mmc 0:1 UINITRD_ADDR uInitrd; bootm UIMAGE_ADDR UINITRD_ADDR'
 		setenv bootargs console=\${console} \${optargs} root=\${mmcroot} rootfstype=\${mmcrootfstype} VIDEO_DISPLAY
 		boot
-normal_boot_cmd
 
+	__EOF__
 }
 
 function boot_scr_to_uenv_txt {
-
-cat > ${TEMPDIR}/bootscripts/uEnv.cmd <<uenv_boot_cmd
+	cat > ${TEMPDIR}/bootscripts/uEnv.cmd <<-__EOF__
 		bootenv=boot.scr
 		loaduimage=fatload mmc \${mmcdev} \${loadaddr} \${bootenv}
 		mmcboot=echo Running boot.scr script from mmc ...; source \${loadaddr}
-uenv_boot_cmd
 
+	__EOF__
 }
 
 function boot_uenv_txt_template {