Don't update radio directly when saving/restoring tx/rx model settings. (#1160)

* Set rf direction in RadioState

* centralize cpld load for TX->RX

* Remove calls to load_sram from all apps

* re-add CPLD hack, don't set radio values directly.

---------

Co-authored-by: kallanreed <kallanreed@noreply.github.com>

firmware/application/transmitter_model.cpp

@@ -147,6 +147,13 @@ void TransmitterModel::disable() {
     led_tx.off();
 }
 
+void TransmitterModel::set_configuration_without_update(
+    uint32_t baseband_bandwidth,
+    uint32_t sampling_rate) {
+    baseband_bandwidth_ = baseband_bandwidth;
+    sampling_rate_ = sampling_rate;
+}
+
 void TransmitterModel::configure_from_app_settings(
     const app_settings::AppSettings& settings) {
     baseband_bandwidth_ = settings.baseband_bandwidth;