new section for IAL engine singletouchkey

etc/MiniGUI.cfg

@@ -83,6 +83,19 @@ double_buffering=true
 exdriver=libhidrmdrivers-0.2.so.0
 #}}
 
+#{{ifdef _MGIAL_SINGLETOUCHKEY
+[singletouchkey]
+# The touch device; use none to disable touch event.
+touch_dev=/dev/input/event0
+# The key device; use none to disable key event.
+key_dev=none
+# The number of keys; only valid if `keydev` defined.
+nr_keys=2
+# The maps from Linux keycode to MiniGUI scancode; only valid if `nr_keys` > 0.
+keycode2scancode0=20,1
+keycode2scancode1=50,2
+#}}
+
 #{{ifdef _MGIAL_LIBINPUT
 [libinput]
 seat=seat0