topology: handle reported sizes smaller then sector

Recent kernel (4.4) start to report values smaller then sector size
(but in reporting size for SSD which support data zeroing on discard).

For now log warning and assume it really means 1 sector.

Addressing RHBZ:
https://bugzilla.redhat.com/show_bug.cgi?id=1313377

lib/device/dev-type.c

@@ -853,6 +853,12 @@ static unsigned long _dev_topology_attribute(struct dev_types *dt,
 
 	result = value >> SECTOR_SHIFT;
 
+	if (!result && value) {
+		log_warn("WARNING: Device %s: %s is %lu and is unexpectedly less then sector.",
+			 dev_name(dev), attribute, value);
+		result = 1;
+	}
+
 out_close:
 	if (fclose(fp))
 		log_sys_debug("fclose", path);