debian: Ensure USRP1 firmware is part of osmo-trx-usrp1

The std_inband.rbf files are required to operate USRP1 with timestamps

Change-Id: I9b3e937ea1941953dcdcaf57cfec9575cd5a8a9c
diff --git a/debian/osmo-trx-usrp1.install b/debian/osmo-trx-usrp1.install
index 1b76249..c7e54b1 100644
--- a/debian/osmo-trx-usrp1.install
+++ b/debian/osmo-trx-usrp1.install
@@ -1 +1,3 @@
 /usr/bin/osmo-trx-usrp1
+/usr/share/usrp/rev2/std_inband.rbf
+/usr/share/usrp/rev4/std_inband.rbf