minor: do not double log key input event

frontend/device/input.lua

@@ -594,12 +594,14 @@ function Input:waitEvent(timeout_us)
     if ok and ev then
         if DEBUG.is_on and ev then
             DEBUG:logEv(ev)
-            logger.dbg(string.format("input event => type: %d, code: %d, value: %d, time: %d.%d",
-                                     ev.type, ev.code, ev.value, ev.time.sec, ev.time.usec))
+            logger.dbg(string.format(
+                "%s event => type: %d, code: %d(%s), value: %d, time: %d.%d",
+                ev.type == EV_KEY and "key" or "input",
+                ev.type, ev.code, self.event_map[ev.code], ev.value,
+                ev.time.sec, ev.time.usec))
         end
         self:eventAdjustHook(ev)
         if ev.type == EV_KEY then
-            logger.dbg("key ev", ev)
             return self:handleKeyBoardEv(ev)
         elseif ev.type == EV_ABS and ev.code == ABS_OASIS_ORIENTATION then
             return self:handleOasisOrientationEv(ev)