trx/ctrl_if_bb.py: reset transceiver on POWEROFF

Change-Id: I1e7f74c56388a431794a0b32b8a9537c360f5d33
diff --git a/python/trx/ctrl_if_bb.py b/python/trx/ctrl_if_bb.py
index f9840d4..0e194d0 100644
--- a/python/trx/ctrl_if_bb.py
+++ b/python/trx/ctrl_if_bb.py
@@ -63,6 +63,9 @@
 				self.tb.stop()
 				self.tb.wait()
 
+			# POWEROFF is also used to reset transceiver
+			self.tb.reset()
+
 			return 0
 
 		# Gain control