clip+/zip: add FMS soft lock action

Change-Id: Iba5cb8b29ad06080d04105d6f9ef2c62e81d4f36
Reviewed-on: http://gerrit.rockbox.org/491
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>

apps/keymaps/keymap-clip.c

@@ -255,6 +255,10 @@ static const struct button_mapping button_context_radio[]  = {
     { ACTION_SETTINGS_DEC,      BUTTON_VOL_DOWN,                BUTTON_NONE },
     { ACTION_SETTINGS_DECREPEAT,BUTTON_VOL_DOWN|BUTTON_REPEAT,  BUTTON_NONE },
 
+#ifndef HAS_BUTTON_HOLD /* Clip+ */
+    { ACTION_STD_KEYLOCK,       BUTTON_HOME|BUTTON_SELECT,      BUTTON_NONE },
+#endif /* HAS_BUTTON_HOLD */
+
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_SETTINGS)
 }; /* button_context_radio */