Add set/get ext level for FTDX101

(cherry picked from commit c4a007cb5f)

rigs/yaesu/ftdx101.c

@@ -238,5 +238,6 @@ const struct rig_caps ftdx101d_caps =
     .get_trn =            newcat_get_trn,
     .set_channel =        newcat_set_channel,
     .get_channel =        newcat_get_channel,
-
+    .set_ext_level =      newcat_set_ext_level,
+    .get_ext_level =      newcat_get_ext_level,
 };

rigs/yaesu/newcat.h

@@ -217,6 +217,9 @@ rmode_t newcat_rmode(char mode);
 char newcat_modechar(rmode_t rmode);
 rmode_t newcat_rmode_width(RIG *rig, vfo_t vfo, char mode, pbwidth_t *width);
 
+int newcat_set_ext_level(RIG *rig, vfo_t vfo, token_t token, value_t val);
+int newcat_get_ext_level(RIG *rig, vfo_t vfo, token_t token, value_t *val);
+
 #define TOKEN_BACKEND(t) (t)
 
 #define TOK_ROOFING_FILTER TOKEN_BACKEND(100)