Test adding new mods

driver/bk4819.c

@@ -676,7 +676,9 @@ void BK4819_SetFilterBandwidth(const BK4819_FilterBandwidth_t Bandwidth, const b
         */
     }
 
-    BK4819_WriteRegister(BK4819_REG_43, val);
+    if (Bandwidth != BK4819_FILTER_BW_FSK_OFFLOAD) {
+        BK4819_WriteRegister(BK4819_REG_43, val);
+    }
 }
 
 void BK4819_SetupPowerAmplifier(const uint8_t bias, const uint32_t frequency)

driver/bk4819.h

@@ -48,7 +48,8 @@ enum BK4819_FilterBandwidth_t
 {
     BK4819_FILTER_BW_WIDE = 0,
     BK4819_FILTER_BW_NARROW,
-    BK4819_FILTER_BW_NARROWER
+    BK4819_FILTER_BW_NARROWER,
+    BK4819_FILTER_BW_FSK_OFFLOAD
 };
 
 typedef enum BK4819_FilterBandwidth_t BK4819_FilterBandwidth_t;