Add option to set stack size in config file, default == 0 == OS default

Change-Id: Id752f6b5ce9a96a67cd1ff835687ce0e03d3a50d
diff --git a/CommonLibs/trx_vty.h b/CommonLibs/trx_vty.h
index 8e91113..d939051 100644
--- a/CommonLibs/trx_vty.h
+++ b/CommonLibs/trx_vty.h
@@ -63,6 +63,7 @@
 		bool ext_rach;
 		bool egprs;
 		unsigned int sched_rr;
+		unsigned int stack_size;
 		unsigned int num_chans;
 		struct trx_chan chans[TRX_CHAN_MAX];
 	} cfg;