PixelShaderGen: Move defines into the implementation file

These aren't used outside of it. This also reduces the amount of things in
the global namespace.

Source/Core/VideoCommon/PixelShaderGen.cpp

@@ -18,6 +18,24 @@
 #include "VideoCommon/VideoConfig.h"
 #include "VideoCommon/XFMemory.h"  // for texture projection mode
 
+// TODO: Get rid of these
+enum : u32
+{
+	C_COLORMATRIX   = 0,                 //  0
+	C_COLORS        = 0,                 //  0
+	C_KCOLORS       = C_COLORS + 4,      //  4
+	C_ALPHA         = C_KCOLORS + 4,     //  8
+	C_TEXDIMS       = C_ALPHA + 1,       //  9
+	C_ZBIAS         = C_TEXDIMS + 8,     // 17
+	C_INDTEXSCALE   = C_ZBIAS + 2,       // 19
+	C_INDTEXMTX     = C_INDTEXSCALE + 2, // 21
+	C_FOGCOLOR      = C_INDTEXMTX + 6,   // 27
+	C_FOGI          = C_FOGCOLOR + 1,    // 28
+	C_FOGF          = C_FOGI + 1,        // 29
+	C_ZSLOPE        = C_FOGF + 2,        // 31
+	C_EFBSCALE      = C_ZSLOPE + 1,      // 32
+	C_PENVCONST_END = C_EFBSCALE + 1
+};
 
 static const char *tevKSelTableC[] =
 {

Source/Core/VideoCommon/PixelShaderGen.h

@@ -9,23 +9,6 @@
 #include "VideoCommon/ShaderGenCommon.h"
 #include "VideoCommon/VideoCommon.h"
 
-// TODO: get rid of them as they aren't used
-#define C_COLORMATRIX   0                   // 0
-#define C_COLORS        0                   // 0
-#define C_KCOLORS       (C_COLORS + 4)      // 4
-#define C_ALPHA         (C_KCOLORS + 4)     // 8
-#define C_TEXDIMS       (C_ALPHA + 1)       // 9
-#define C_ZBIAS         (C_TEXDIMS + 8)     //17
-#define C_INDTEXSCALE   (C_ZBIAS + 2)       //19
-#define C_INDTEXMTX     (C_INDTEXSCALE + 2) //21
-#define C_FOGCOLOR      (C_INDTEXMTX + 6)   //27
-#define C_FOGI          (C_FOGCOLOR + 1)    //28
-#define C_FOGF          (C_FOGI + 1)        //29
-#define C_ZSLOPE        (C_FOGF + 2)        //31
-#define C_EFBSCALE      (C_ZSLOPE + 1)      //32
-
-#define C_PENVCONST_END (C_EFBSCALE + 1)
-
 // Different ways to achieve rendering with destination alpha
 enum DSTALPHA_MODE
 {