Updated Modem control using KISS protocol extension (markdown)

Modem-control-using-KISS-protocol-extension.md

@@ -14,13 +14,18 @@ Payloads for commands are sent and expected as big endian and defined as:
 ```
   // KISS SetHardware 6
   struct SetHardware {
-    uint32_t freq;
+    uint32_t freqRx;
+    uint32_t freqTx;
+    uint8_t modType;   // 0 - LoRa, 1 - FSK
+    int16_t pwr;
     uint32_t bw;
     uint16_t sf;
     uint16_t cr;
-    uint16_t pwr;
     uint16_t sync;
     uint8_t crc;
+    uint32_t fskBitRate;
+    uint32_t fskFreqDev;
+    uint32_t fskRxBw;
   } __attribute__((packed));
   
   // KISS command 7