hardware::Atreus: Make cpplint happy

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

src/kaleidoscope/hardware/Atreus.cpp

@@ -73,7 +73,7 @@ void Atreus::setup(void) {
   TCCR1B = _BV(WGM13);
   TCCR1A = 0;
 
-  const unsigned long cycles = (F_CPU / 2000000) * 500;
+  const uint32_t cycles = (F_CPU / 2000000) * 500;
 
   ICR1 = cycles;
   TCCR1B = _BV(WGM13) | _BV(CS10);

src/kaleidoscope/hardware/Atreus.h

@@ -46,14 +46,14 @@ namespace hardware {
 
 class Atreus {
  public:
-  Atreus(void) {};
+  Atreus(void) {}
 
-  void syncLeds(void) {};
-  void setCrgbAt(byte row, byte col, cRGB color) {};
-  void setCrgbAt(uint8_t i, cRGB crgb) {};
+  void syncLeds(void) {}
+  void setCrgbAt(byte row, byte col, cRGB color) {}
+  void setCrgbAt(uint8_t i, cRGB crgb) {}
   cRGB getCrgbAt(uint8_t i) {
     return CRGB(0, 0, 0);
-  };
+  }
 
   void scanMatrix(void);
   void readMatrix(void);