maxwell_to_gl: Implement Texture::WrapMode::Border.

src/video_core/renderer_opengl/maxwell_to_gl.h

@@ -112,6 +112,8 @@ inline GLenum WrapMode(Tegra::Texture::WrapMode wrap_mode) {
         return GL_MIRRORED_REPEAT;
     case Tegra::Texture::WrapMode::ClampToEdge:
         return GL_CLAMP_TO_EDGE;
+    case Tegra::Texture::WrapMode::Border:
+        return GL_CLAMP_TO_BORDER;
     case Tegra::Texture::WrapMode::ClampOGL:
         // TODO(Subv): GL_CLAMP was removed as of OpenGL 3.1, to implement GL_CLAMP, we can use
         // GL_CLAMP_TO_BORDER to get the border color of the texture, and then sample the edge to