mixin.mk, mobile.mk: separate u-boot specyfic to mixin targets

conf.d/mixin.mk

@@ -64,6 +64,15 @@ endif
 
 mixin/vm-archdep-x11: mixin/vm-archdep use/vmguest/kvm/x11; @:
 
+mixin/uboot-extlinux: use/bootloader/uboot
+	@$(call set,EFI_BOOTLOADER,)
+
+mixin/uboot-extlinux-efi: use/uboot +efi; @:
+ifeq (aarch64,$(ARCH))
+	@$(call set,VM_PARTTABLE,msdos)
+	@$(call set,VM_BOOTTYPE,EFI)
+endif
+
 ### regular.mk
 mixin/regular-x11: use/browser/firefox \
 	use/branding use/ntp/chrony use/services/lvm2-disable

conf.d/mobile.mk

@@ -45,21 +45,15 @@ vm/.phosh: vm/systemd mixin/mobile-base mixin/phosh +systemd \
 	@$(call add,THE_LISTS,mobile/apps)
 	@$(call add,THE_PACKAGES,phosh-background-settings)
 
-vm/alt-mobile-phosh-un-def: vm/.phosh use/tty/S0 use/uboot +efi
+vm/alt-mobile-phosh-un-def: vm/.phosh mixin/uboot-extlinux-efi use/tty/S0
 	@$(call set,KFLAVOURS,un-def)
-ifeq (aarch64,$(ARCH))
-	@$(call set,VM_PARTTABLE,msdos)
-	@$(call set,VM_BOOTTYPE,EFI)
-endif
 
 ifeq (aarch64,$(ARCH))
-mixin/mobile-pine: use/bootloader/uboot use/tty/S2
-	@$(call set,EFI_BOOTLOADER,)
+mixin/mobile-pine: mixin/uboot-extlinux use/tty/S2
 	@$(call set,KFLAVOURS,pine)
 	@$(call add,THE_PACKAGES,alsa-ucm-conf-pinephone-pro-workaround)
 
-mixin/mobile-mp: use/bootloader/uboot use/tty/S0
-	@$(call set,EFI_BOOTLOADER,)
+mixin/mobile-mp: mixin/uboot-extlinux use/tty/S0
 	@$(call set,KFLAVOURS,mp)
 
 vm/alt-mobile-phosh-pine: vm/.phosh mixin/mobile-pine; @: