Correct optional PA14_XIN and PA15_XOUT external crystal floating pins.

hardware/ctrl-mchip.sch

@@ -425,8 +425,6 @@ NoConn ~ 6050 3200
 NoConn ~ 6050 3300
 NoConn ~ 6050 3400
 NoConn ~ 6050 3900
-NoConn ~ 6050 4300
-NoConn ~ 6050 4400
 NoConn ~ 6050 5100
 NoConn ~ 6050 5200
 $Comp
@@ -1270,10 +1268,8 @@ Wire Wire Line
 Wire Wire Line
 	2800 4950 2850 5000
 Connection ~ 2850 5000
-Text Label 6050 4300 0    50   ~ 0
-CRYSTAL_XIN-RESERVED
-Text Label 6050 4400 0    50   ~ 0
-CRYSTAL_XOUT-RESERVED
+Text Label 6750 4400 0    50   ~ 0
+CRY_XOUT-RSVD
 Text Notes 6500 5900 0    50   ~ 0
 32MHz crystal
 Wire Wire Line
@@ -1286,4 +1282,29 @@ Connection ~ 7550 5800
 Connection ~ 7550 5650
 Wire Wire Line
 	7550 5650 7550 5800
+$Comp
+L power:GND #PWR?
+U 1 1 5FD6A96E
+P 6650 4400
+F 0 "#PWR?" H 6650 4150 50  0001 C CNN
+F 1 "GND" H 6655 4227 50  0000 C CNN
+F 2 "" H 6650 4400 50  0001 C CNN
+F 3 "" H 6650 4400 50  0001 C CNN
+	1    6650 4400
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	6050 4300 6650 4300
+Wire Wire Line
+	6650 4300 6650 4400
+Wire Wire Line
+	6050 4400 6650 4400
+Connection ~ 6650 4400
+Text Label 6750 4300 0    50   ~ 0
+CRY_XIN-RSVD
+Wire Wire Line
+	6650 4300 6750 4300
+Connection ~ 6650 4300
+Wire Wire Line
+	6650 4400 6750 4400
 $EndSCHEMATC