BDN9: Fix encoder direction, add 3rd encoder for Rev. 1.3 support (#10883)

keyboards/keebio/bdn9/rev1/config.h

@@ -38,8 +38,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     { E6, B4, B2 } \
 }
 
-#define ENCODERS_PAD_A { D1, F5 }
-#define ENCODERS_PAD_B { D0, F6 }
+#define ENCODERS_PAD_A { D0, F6, B6 }
+#define ENCODERS_PAD_B { D1, F5, F7 }
 
 #define BACKLIGHT_PIN B5
 // #define BACKLIGHT_BREATHING