Enabling FAFT on Parrot

This change contains the following fixes:
1) Fixing CTRL+D sequence. Before Servo would press D+CTRL.
2) Fixing hang when rec_mode is set to off while device is off.
3) workaround for bug 16231. Device does not boot after entering dev mode.
4) changing dev_screen timeout to accomodate slower devices.

BUG=chrome-os-partner:16829,chrome-os-partner:16231
TEST=control.faft_lv1, control.faft_lv2, control.faft_lv4 test suites pass

Change-Id: I1f35ecb6814fffb2dc14a934d2c964fa1d1f8c84
Reviewed-on: https://gerrit.chromium.org/gerrit/39724
Reviewed-by: Tom Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Jay Kim <yongjaek@chromium.org>
Reviewed-by: Todd Broch <tbroch@chromium.org>
Commit-Queue: Gediminas Ramanauskas <gedis@chromium.org>
Tested-by: Gediminas Ramanauskas <gedis@chromium.org>
diff --git a/server/cros/servo.py b/server/cros/servo.py
index f6ee2de..7b1965d 100644
--- a/server/cros/servo.py
+++ b/server/cros/servo.py
@@ -261,13 +261,19 @@
         Note, key presses will remain on indefinitely. See
             _press_and_release_keys for release procedure.
         """
-        (m1_a1, m1_a0, m2_a1, m2_a0) = self.KEY_MATRIX[self._key_matrix][key]
+        (m1_a1, m1_a0, m2_a1, m2_a0) = self.KEY_MATRIX[self._key_matrix]['none']
         self.set_nocheck('kbd_m2_a0', m2_a0)
         self.set_nocheck('kbd_m2_a1', m2_a1)
         self.set_nocheck('kbd_m1_a0', m1_a0)
         self.set_nocheck('kbd_m1_a1', m1_a1)
         self.set_nocheck('kbd_en', 'on')
 
+        (m1_a1, m1_a0, m2_a1, m2_a0) = self.KEY_MATRIX[self._key_matrix][key]
+        self.set_nocheck('kbd_m2_a0', m2_a0)
+        self.set_nocheck('kbd_m2_a1', m2_a1)
+        self.set_nocheck('kbd_m1_a0', m1_a0)
+        self.set_nocheck('kbd_m1_a1', m1_a1)
+
 
     def _press_and_release_keys(self, key,
                                 press_secs=SERVO_KEY_PRESS_DELAY):