Tweak long press timeout of language switcher

Previously 1200ms, down to 400ms that is the same value of system
default.

Change-Id: Ia94c6b729893d528ec3f2b961bf2ad22b47fdbb1
diff --git a/java/res/values/config.xml b/java/res/values/config.xml
index ff9e30d..ed7e0e5 100644
--- a/java/res/values/config.xml
+++ b/java/res/values/config.xml
@@ -59,7 +59,7 @@
     <!-- Long pressing shift will invoke caps-lock if > 0, never invoke caps-lock if == 0 -->
     <integer name="config_long_press_shift_key_timeout">1200</integer>
     <!-- Long pressing space will invoke IME switcher if > 0, never invoke IME switcher if == 0 -->
-    <integer name="config_long_press_space_key_timeout">1200</integer>
+    <integer name="config_long_press_space_key_timeout">@integer/config_long_press_key_timeout</integer>
     <integer name="config_touch_noise_threshold_millis">40</integer>
     <integer name="config_double_spaces_turn_into_period_timeout">1100</integer>
     <dimen name="config_touch_noise_threshold_distance">2.0mm</dimen>