regular.mk: add use/stage2/ata

conf.d/regular.mk

@@ -3,7 +3,7 @@ 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/ata use/stage2/fs use/stage2/hid use/stage2/md \
 	use/stage2/mmc use/stage2/net use/stage2/net-nfs use/stage2/cifs \
 	use/stage2/rtc use/stage2/sbc use/stage2/scsi use/stage2/usb \
 	use/tty