defaults.conf: Add SDCCH8 ts in TRX1 cfg

This way we can test too if SDCH8 channels are allocated and used
correctly in TRX1 in multiTRX setups.

Change-Id: I9d08f3d019a28cf775d70d941c5a60a7e7ca20a9
diff --git a/example/defaults.conf b/example/defaults.conf
index 42258a6..dc38030 100644
--- a/example/defaults.conf
+++ b/example/defaults.conf
@@ -51,7 +51,7 @@
     arfcn: 872
     timeslot_list:
     - phys_chan_config: TCH/F
-    - phys_chan_config: TCH/F
+    - phys_chan_config: SDCCH8
     - phys_chan_config: TCH/F
     - phys_chan_config: TCH/F
     - phys_chan_config: TCH/F