srsenb.conf.tmpl: set nof_of_prach_threds to 0 for ZMQ

this executed the PRACH search in the main thread so
PHY workers and PRACH processing don't diverge in loaded
scenarios

Change-Id: I97eddb5f9ca682251ded1f73093c2d0a49462bd6
diff --git a/src/osmo_gsm_tester/templates/srsenb.conf.tmpl b/src/osmo_gsm_tester/templates/srsenb.conf.tmpl
index 5df432b..7ac75bb 100644
--- a/src/osmo_gsm_tester/templates/srsenb.conf.tmpl
+++ b/src/osmo_gsm_tester/templates/srsenb.conf.tmpl
@@ -271,6 +271,9 @@
 #
 #####################################################################
 [expert]
+% if enb.rf_dev_type == 'zmq':
+nof_prach_threads = 0
+% endif
 #pusch_max_its        = 8 # These are half iterations
 #pusch_8bit_decoder   = false
 #nof_phy_threads = 3