user/grub: uboot-flavor subpackage missing split function
Found on HR350A (armv7):
>>> grub-efi*: Running split function efi...
>>> grub-efi*: Preparing subpackage grub-efi...
>>> grub-efi*: Running postcheck for grub-efi
>>> grub-uboot*: Running split function uboot...
/usr/bin/abuild: 602: uboot: not found
>>> ERROR: grub-uboot*: uboot failed
>>> ERROR: grub*: prepare_subpackages failed
>>> ERROR: grub: rootpkg failed
Commit 8b868f32 introduced:
+arm*) flavors="efi uboot";;
but not a corresponding uboot() { }
function for splitting.