ue, config: Add srate parameter to ue config file.

srsue/ue.conf.example

@@ -8,6 +8,7 @@
 # freq_offset: Uplink and Downlink optional frequency offset (in Hz)
 # tx_gain: Transmit gain (dB).
 # rx_gain: Optional receive gain (dB). If disabled, AGC if enabled
+# srate: Optional fixed sampling rate (Hz), corresponding to cell bandwidth. Must be set for 5G-SA.
 #
 # nof_antennas:       Number of antennas per carrier (all carriers have the same number of antennas)
 # device_name:        Device driver family. Supported options: "auto" (uses first found), "UHD" or "bladeRF"
@@ -26,6 +27,7 @@
 freq_offset = 0
 tx_gain = 80
 #rx_gain = 40
+#srate = 11.52e6
 
 #nof_antennas = 1