[hal] Rename PowerDistributionPanel to PowerDistribution (#3466)

Makes HAL more generic for the PDP, to enable the Rev PDH in the future.

hal/src/main/native/athena/CTREPCM.cpp

@@ -183,7 +183,7 @@ HAL_CTREPCMHandle HAL_InitializeCTREPCM(int32_t module,
                                            pcm->previousAllocation);
     } else {
       hal::SetLastErrorIndexOutOfRange(status, "Invalid Index for CTRE PCM", 0,
-                                       kNumAccumulators, module);
+                                       kNumCTREPCMModules, module);
     }
     return HAL_kInvalidHandle;  // failed to allocate. Pass error back.
   }