python/trx: use CamelCase naming for basic classes

Change-Id: Ica9c56d01191dda38e63b51caba2ec8c63b671c9
diff --git a/python/trx/radio_if.py b/python/trx/radio_if.py
index 49e6788..55c8d92 100644
--- a/python/trx/radio_if.py
+++ b/python/trx/radio_if.py
@@ -40,7 +40,7 @@
 
 from dict_toggle_sign import dict_toggle_sign
 
-class radio_if(gr.top_block):
+class RadioInterface(gr.top_block):
 	# PHY specific variables
 	rx_freq = 935e6
 	tx_freq = 890e6