Updating get_rx_window_params() API in stubs

Unittest stubs needed to be updated for the API change.
Although this API is private and internal to LoRaPHY, somehow it
appeared in the LoRaPHYStub. Updating it for consistency.

Author: Hasnain Virk

UNITTESTS/stubs/LoRaPHY_stub.cpp

@@ -168,9 +168,10 @@ uint8_t LoRaPHY::verify_link_ADR_req(verify_adr_params_t *verify_params,
     return LoRaPHY_stub::uint8_value;
 }
 
-void LoRaPHY::get_rx_window_params(double t_symb, uint8_t min_rx_symb,
-                                   uint32_t rx_error, uint32_t wakeup_time,
-                                   uint32_t *window_timeout, int32_t *window_offset)
+void LoRaPHY::get_rx_window_params(float t_symbol, uint8_t min_rx_symbols,
+                                   float rx_error, float wakeup_time,
+                                   uint32_t *window_length, int32_t *window_offset,
+                                   uint8_t phy_dr)
 {
 }