changelog: Note that the patch to mtd_probe.h can probably be discarded

debian/changelog

@@ -14,7 +14,9 @@ systemd (215-17+steamos2+deb8u7) UNRELEASED; urgency=medium
       - Allow access by the steam group to uinput devices, as used for Steam
         Controller support
   * mtd_probe.h-Include-stdint.h-for-uint32_t.patch:
-    Add missing <stdint.h> for uint32_t to fix FTBFS on amd64
+    Add missing <stdint.h> for uint32_t to fix FTBFS on amd64.
+    This change can probably be discarded when rebasing on a newer systemd
+    for SteamOS 3.
 
  -- Simon McVittie <smcv@collabora.com>  Fri, 20 Apr 2018 14:30:29 +0100