sxmo: allow full 180 rotation

pkgs/additional/sxmo-utils/0004-full-auto-rotate.patch

@@ -0,0 +1,13 @@
+diff --git a/scripts/core/sxmo_autorotate.sh b/scripts/core/sxmo_autorotate.sh
+index 58e3f4b..cbf0163 100755
+--- a/scripts/core/sxmo_autorotate.sh
++++ b/scripts/core/sxmo_autorotate.sh
+@@ -18,6 +18,8 @@ while true; do
+ 	x_raw="$(cat "$FILE_X")"
+ 	if  [ "$x_raw" -ge "$RIGHT_SIDE_UP" ] && sxmo_rotate.sh isrotated ; then
+ 		sxmo_rotate.sh rotnormal
++	elif [ "$x_raw" -le "$UPSIDE_DOWN" ] && [ "$(sxmo_rotate.sh isrotated)" != "invert" ]; then
++		sxmo_rotate.sh rotinvert
+ 	elif [ "$y_raw" -le "$UPSIDE_DOWN" ] && [ "$(sxmo_rotate.sh isrotated)" != "right" ]; then
+ 		sxmo_rotate.sh rotright
+ 	elif [ "$y_raw" -ge "$RIGHT_SIDE_UP" ] && [ "$(sxmo_rotate.sh isrotated)" != "left" ]; then

pkgs/additional/sxmo-utils/default.nix

@@ -15,9 +15,13 @@ stdenv.mkDerivation rec {
   };
 
   patches = [
+    # needed for basic use:
     ./0001-group-differs-from-user.patch
     ./0002-ensure-log-dir.patch
     ./0003-fix-xkb-paths.patch
+
+    # personal preferences:
+    ./0004-full-auto-rotate.patch
   ];
 
   postPatch = ''