AmarisoftUE: Fix setting tx/rx gain attr

Fixes: a6d6304afccbd37462acf9ad8207d6ac29f25da9
Change-Id: I344313863390a00604045dcc18e552aa789b282f
diff --git a/sysmocom/defaults.conf b/sysmocom/defaults.conf
index f7820c0..36a2f42 100644
--- a/sysmocom/defaults.conf
+++ b/sysmocom/defaults.conf
@@ -152,5 +152,9 @@
   tx_gain: 80
   rx_gain: 40
 
+amarisoftue:
+  tx_gain: 89
+  rx_gain: 60
+
 iperf3cli:
   time: 60