VertexShaderGen: Optimize shader uid data order.

Source/Core/VideoCommon/Src/VertexShaderGen.h

@@ -69,12 +69,12 @@ struct vertex_shader_uid_data
 {
 	u32 NumValues() const { return sizeof(vertex_shader_uid_data); }
 
-	u32 components;
-	u32 numColorChans : 2;
+	u32 components : 23;
 	u32 numTexGens : 4;
-
+	u32 numColorChans : 2;
 	u32 dualTexTrans_enabled : 1;
 	u32 pixel_lighting : 1;
+	u32 pad0 : 1;
 
 	u32 texMtxInfo_n_projection : 16; // Stored separately to guarantee that the texMtxInfo struct is 8 bits wide
 	struct {