api: add firmware interface XML file to introspection/Makefile.am

Signed-off-by: Thomas Tuttle <ttuttle@chromium.org>
(cherry picked from commit 835e14d8d55eff05865e348977d623bff13fb130)

BUG=None
TEST=None
CQ-DEPEND=I4520f762234b7b6da8b788a5a098ddfec89a7379

Change-Id: I52bd554fffd48dbcd6ea8049ed30e65b7cf605c5
Reviewed-on: https://gerrit.chromium.org/gerrit/14080
Reviewed-by: Eric Shienbrood <ers@chromium.org>
Commit-Ready: ttuttle <ttuttle@chromium.org>
Tested-by: ttuttle <ttuttle@chromium.org>
diff --git a/introspection/Makefile.am b/introspection/Makefile.am
index 0c67898..70143ce 100644
--- a/introspection/Makefile.am
+++ b/introspection/Makefile.am
@@ -8,6 +8,7 @@
 	org.freedesktop.ModemManager.xml \
 	org.freedesktop.ModemManager.Modem.xml \
 	org.freedesktop.ModemManager.Modem.Cdma.xml \
+	org.freedesktop.ModemManager.Modem.Firmware.xml \
 	org.freedesktop.ModemManager.Modem.Gsm.xml \
 	org.freedesktop.ModemManager.Modem.Gsm.Card.xml \
 	org.freedesktop.ModemManager.Modem.Gsm.Contacts.xml \