Add DE-9 power pin comments to shifters

Mostly because the CS pin pull-up is absolutely necessary for the 'reverse' signal to work on the Driving Force shifters.

Author: dmadison

examples/Shifter/LogitechShifter/LogitechShifter_Joystick/LogitechShifter_Joystick.ino

@@ -41,6 +41,9 @@ const bool SendAnalogAxis = false;
 // games, but can be useful for custom controller purposes.
 const bool SendReverseRaw = false;
 
+//  Power (VCC): DE-9 pin 9
+// Ground (GND): DE-9 pin 6
+// Note: DE-9 pin 3 (CS) needs to be pulled-up to VCC!
 const int Pin_ShifterX   = A0;  // DE-9 pin 4
 const int Pin_ShifterY   = A2;  // DE-9 pin 8
 const int Pin_ShifterRev = 2;   // DE-9 pin 2

examples/Shifter/LogitechShifter/LogitechShifter_Print/LogitechShifter_Print.ino

@@ -28,6 +28,9 @@
 
 #include <SimRacing.h>
 
+//  Power (VCC): DE-9 pin 9
+// Ground (GND): DE-9 pin 6
+// Note: DE-9 pin 3 (CS) needs to be pulled-up to VCC!
 const int Pin_ShifterX   = A0;  // DE-9 pin 4
 const int Pin_ShifterY   = A2;  // DE-9 pin 8
 const int Pin_ShifterRev = 2;   // DE-9 pin 2

examples/Shifter/LogitechShifterG25/LogitechShifterG25_Joystick/LogitechShifterG25_Joystick.ino

@@ -31,6 +31,8 @@
 #include <SimRacing.h>
 #include <Joystick.h>
 
+//  Power (VCC): DE-9 pin 9
+// Ground (GND): DE-9 pin 6
 const int Pin_ShifterX      = A0;  // DE-9 pin 4
 const int Pin_ShifterY      = A2;  // DE-9 pin 8
 

examples/Shifter/LogitechShifterG25/LogitechShifterG25_Print/LogitechShifterG25_Print.ino

@@ -27,6 +27,8 @@
 
 #include <SimRacing.h>
 
+//  Power (VCC): DE-9 pin 9
+// Ground (GND): DE-9 pin 6
 const int Pin_ShifterX      = A0;  // DE-9 pin 4
 const int Pin_ShifterY      = A2;  // DE-9 pin 8
 

examples/Shifter/LogitechShifterG27/LogitechShifterG27_Joystick/LogitechShifterG27_Joystick.ino

@@ -31,6 +31,8 @@
 #include <SimRacing.h>
 #include <Joystick.h>
 
+//  Power (VCC): DE-9 pin 9
+// Ground (GND): DE-9 pin 6
 const int Pin_ShifterX      = A0;  // DE-9 pin 4
 const int Pin_ShifterY      = A2;  // DE-9 pin 8
 

examples/Shifter/LogitechShifterG27/LogitechShifterG27_Print/LogitechShifterG27_Print.ino

@@ -27,6 +27,8 @@
 
 #include <SimRacing.h>
 
+//  Power (VCC): DE-9 pin 9
+// Ground (GND): DE-9 pin 6
 const int Pin_ShifterX      = A0;  // DE-9 pin 4
 const int Pin_ShifterY      = A2;  // DE-9 pin 8