[hal] Expose more FPGA functionality (#6942)

- function to reset user rail fault counters
- function to get comms disable count
- correct docs for user rail count functions

wpilibc/src/main/native/include/frc/RobotController.h

@@ -115,6 +115,14 @@ class RobotController {
    */
   static bool IsBrownedOut();
 
+  /**
+   * Gets the number of times the system has been disabled due to communication
+   * errors with the Driver Station.
+   *
+   * @return number of disables due to communication errors.
+   */
+  static int GetCommsDisableCount();
+
   /**
    * Gets the current state of the Robot Signal Light (RSL)
    * @return The current state of the RSL- true if on, false if off
@@ -174,7 +182,7 @@ class RobotController {
 
   /**
    * Get the count of the total current faults on the 3.3V rail since the
-   * controller has booted.
+   * code started.
    *
    * @return The number of faults
    */
@@ -212,7 +220,7 @@ class RobotController {
 
   /**
    * Get the count of the total current faults on the 5V rail since the
-   * controller has booted.
+   * code started.
    *
    * @return The number of faults
    */
@@ -250,12 +258,15 @@ class RobotController {
 
   /**
    * Get the count of the total current faults on the 6V rail since the
-   * controller has booted.
+   * code started.
    *
    * @return The number of faults.
    */
   static int GetFaultCount6V();
 
+  /** Reset the overcurrent fault counters for all user rails to 0. */
+  static void ResetRailFaultCounts();
+
   /**
    * Get the current brownout voltage setting.
    *