regular.mk: add grub submenu 'Network installation'

conf.d/regular.mk

@@ -4,7 +4,7 @@ ifeq (distro,$(IMAGE_CLASS))
 # common ground (really lowlevel)
 distro/.regular-bare: distro/.base use/kernel/net use/docs/license \
 	use/stage2/fs use/stage2/hid use/stage2/md \
-	use/stage2/mmc use/stage2/net use/stage2/net-nfs use/stage2/cifs \
+	use/stage2/mmc use/stage2/net-install \
 	use/stage2/rtc use/stage2/sbc use/stage2/scsi use/stage2/usb
 	@$(call try,SAVE_PROFILE,yes)
 ifeq (,$(BRANCH))