Make Kenwood TS590s firmware defect fixup revision specific.

As Kenwood have finally released TS590s firmware revision 1.08 and it
fixes the split TX defects; the fixup has been made revision specific.

kenwood/kenwood.c

@@ -474,7 +474,18 @@ int kenwood_open(RIG *rig)
 	    /* store the data between "FV" and ";" which should be a
 	       f/w version string of the form n.n e.g. 1.07 */
 	    priv->fw_rev = strncpy (fw_version, &buffer[2], size - 3);
-
+	    char * dot_pos = strchr (buffer, '.');
+	    if (dot_pos)
+	      {
+		*dot_pos = '\0';
+		buffer[size - 1] = '\0';
+		priv->fw_rev_uint = atoi (&buffer[2]) * 100 + atoi (dot_pos + 1);
+	      }
+	    else
+	      {
+		rig_debug (RIG_DEBUG_ERR, "%s: cannot get f/w version\n", __func__);
+		return -RIG_EPROTO;
+	      }
 	    rig_debug (RIG_DEBUG_TRACE, "%s: found f/w version %s\n", __func__, priv->fw_rev);
 	  }
 
@@ -852,7 +863,8 @@ int kenwood_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
 
 	int err = kenwood_simple_cmd(rig, freqbuf);
 
-	if (RIG_OK == err && 'B' == vfo_letter && RIG_MODEL_TS590S == rig->caps->rig_model)
+	struct kenwood_priv_data * priv = rig->state.priv;
+	if (RIG_OK == err && 'B' == vfo_letter && RIG_MODEL_TS590S == rig->caps->rig_model && priv->fw_rev_uint <= 107)
 	  {
 	    /* TS590s f/w rev 1.07 or earlier has a defect that means
 	       frequency set on TX VFO in split mode may not be set

kenwood/kenwood.h

@@ -75,9 +75,7 @@ struct kenwood_priv_data {
     int k3_ext_lvl;		/* Initial K3 extension level */
     int k2_md_rtty;		/* K2 RTTY mode available flag, 1 = RTTY, 0 = N/A */
     char *fw_rev;		/* firmware revision level */
-    int ptt_state;		/* some rigs don't tell PTT state so
-				   we store an assumed value here for
-				   them */
+    unsigned fw_rev_uint;	/* firmware revison as a number 1.07 -> 107 */
 };