Remove UI dependency from goldfish_event_device.c

Change-Id: Iea5edfbae0caff45161c814d631d35d2e6d61d1c
diff --git a/qemu-options.hx b/qemu-options.hx
index e67033a..ed89bc5 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1619,4 +1619,8 @@
     "-http-proxy <proxy>"
     " make TCP connections through a HTTP/HTTPS proxy\n")
 
+DEF("charmap", HAS_ARG, QEMU_OPTION_charmap, \
+    "-charmap <file>"
+    " use specific key character map\n")
+
 #endif