Revert "imx6: bootscript-apalis: make it working on v2021.01 release"

This reverts commit 4968fc8f as the bump
to v2021.01 needs swig on the host for pylibfdt which is needed by dtoc
tool to generate .h/.c files from DTBs in SPL for mx6cuboxi_config.

Signed-off-by: Petr Štetiar <ynezz@true.cz>

target/linux/imx6/image/bootscript-apalis

 echo "Toradex Apalis OpenWrt Boot script v1.1"
 
-setenv mmcdev 0
-setenv mmcrootpart 2
-part uuid mmc ${mmcdev}:${mmcrootpart} uuid
+run emmcfinduuid
 
 setenv nextcon 0
 setenv boot_file uImage
 setenv fdt_file imx6q-apalis-ixora.dtb
 setenv root root=PARTUUID=${uuid} rootfstype=squashfs rootwait
 setenv bootargs earlyprintk console=${console},${baudrate}n8 ${root}
-setenv fsload ext4load mmc ${mmcdev}:${mmcbootpart}
+setenv fsload ext4load mmc ${emmcdev}:${emmcbootpart}
 
 if ${fsload} ${kernel_addr_r} ${boot_file}; then
 	if ${fsload} ${fdt_addr_r} ${fdt_file}; then