style: function names should be lower camel

Fix function names to be lower camel.

Change-Id: I145e1f4c03d7740bc1525dcffbdce2f78fd61075
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/pid/pidthread.cpp b/pid/pidthread.cpp
index dc53bdb..7d27e42 100644
--- a/pid/pidthread.cpp
+++ b/pid/pidthread.cpp
@@ -25,7 +25,7 @@
 #include <thread>
 #include <vector>
 
-static void ProcessThermals(PIDZone* zone)
+static void processThermals(PIDZone* zone)
 {
     // Get the latest margins.
     zone->updateSensors();
@@ -37,7 +37,7 @@
     zone->determineMaxRPMRequest();
 }
 
-void PIDControlThread(PIDZone* zone)
+void pidControlThread(PIDZone* zone)
 {
     int ms100cnt = 0;
     /*
@@ -66,7 +66,7 @@
     zone->initializeLog();
 #endif
     zone->initializeCache();
-    ProcessThermals(zone);
+    processThermals(zone);
 
     while (true)
     {
@@ -86,7 +86,7 @@
         {
             ms100cnt = 0;
 
-            ProcessThermals(zone);
+            processThermals(zone);
         }
 
         // Run the fan PIDs every iteration.