poky-image-sato-directdisk: directdisk variant of Sato image

New recipe to create a directdisk Sato disk image.

Signed-off-by: Joshua Lock <josh@linux.intel.com>

meta/packages/images/poky-image-sato-directdisk.bb

@@ -0,0 +1,14 @@
+DESCRIPTION = "Sato Direct Disk Image"
+
+inherit boot-directdisk
+
+do_bootdirectdisk_prepend () {
+	import bb
+	fstypes = bb.data.getVar('IMAGE_FSTYPES', d, True)
+	if 'ext3' not in fstypes:
+		bb.msg.fatal(bb.msg.domain.Build, "ext3 not in IMAGE_FSTYPES")
+}
+
+ROOTFS = "${DEPLOY_DIR_IMAGE}/poky-image-sato-${MACHINE}.ext3"
+
+do_bootdirectdisk[depends] += "poky-image-sato:do_rootfs"