Emulator: Move LCDC inside PPU class

src/ppu.h

@@ -23,6 +23,11 @@
 #define TILE_HEIGHT 8
 #define TILE_SIZE 16
 
+class PPU final : public ProcessingUnit {
+public:
+	PPU(uint32_t frequency);
+	~PPU();
+
 	enum LCDC : uint8_t {
 		None = 0,
 		BGandWindowEnable = BIT(0),
@@ -35,11 +40,6 @@ enum LCDC : uint8_t {
 		LCDandPPUEnable = BIT(7),
 	};
 
-class PPU final : public ProcessingUnit {
-public:
-	PPU(uint32_t frequency);
-	~PPU();
-
 	enum State : uint8_t {
 		HBlank = 0,
 		VBlank = 1,