Adding compander

driver/bk4819.h

@@ -84,6 +84,11 @@ void     BK4819_RX_TurnOn(void);
 void     BK4819_PickRXFilterPathBasedOnFrequency(uint32_t Frequency);
 void     BK4819_DisableScramble(void);
 void     BK4819_EnableScramble(uint8_t Type);
+
+bool     BK4819_CompanderEnabled(void);
+void     BK4819_DisableCompander(void);
+void     BK4819_EnableCompander(void);
+
 void     BK4819_DisableVox(void);
 void     BK4819_DisableDTMF(void);
 void     BK4819_EnableDTMF(void);