fixup! software/ors-amarisoft: Start to introduce ORS mode

In f3f1cb46 I've made a mistake in "inject ORS defaults" code - there it should
be RF.dl_earfcn and RF.dl_nr_arfcn instead of RF.earfcn and RF.nr_arfcn.

software/ors-amarisoft/instance-ors-enb.jinja2.cfg

@@ -8,8 +8,8 @@
 {#- inject ORS defaults #}
 {%- do RF.setdefault('tx_gain',     ors_version['current-tx-gain']) %}
 {%- do RF.setdefault('rx_gain',     ors_version['current-rx-gain']) %}
-{%- do RF.setdefault('earfcn',   ors_version['current-earfcn']) %}
-{%- do RF.setdefault('nr_arfcn', ors_version['current-nr-arfcn']) %}
+{%- do RF.setdefault('dl_earfcn',   ors_version['current-earfcn']) %}
+{%- do RF.setdefault('dl_nr_arfcn', ors_version['current-nr-arfcn']) %}
 {%- do RF.setdefault('nr_band',     ors_version['current-nr-band']) %}