gitignore: add uhddev_ipc.cpp

This file gets generated during the build.

Change-Id: I70bfb456e309daa4436767b2e55bce0c038a4975
diff --git a/.gitignore b/.gitignore
index 2020422..fec8fab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@
 Transceiver52M/osmo-trx-usrp1
 Transceiver52M/osmo-trx-lms
 Transceiver52M/osmo-trx-ipc
+Transceiver52M/device/ipc/uhddev_ipc.cpp
 
 .clang-format