AmarisoftENB: Support setting PCI value

Change-Id: Ibffb95f9b55e145d76ba64119a73ef9f1ed7cdef
diff --git a/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl b/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
index 89e65f1..4dc9c60 100644
--- a/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
@@ -61,7 +61,7 @@
     dl_earfcn: ${cell.dl_earfcn},
     rf_port: ${loop.index},
     cell_id: ${cell.cell_id},
-    n_id_cell: ${loop.index + 1},
+    n_id_cell: ${cell.pci},
     tac: 0x0001,
     root_sequence_index: ${loop.index + 204}, /* PRACH root sequence index */