egl: make eglSwapBuffers* a no-op for !window surfaces

Analogous to the previous commit - the spec says the function is a
no-op when a pbuffer or pixmap surface is used.

Cc: samiuddi <sami.uddin.mohammad@intel.com>
Cc: Erik Faye-Lund <kusmabite@gmail.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

src/egl/main/eglapi.c

@@ -1260,6 +1260,9 @@ eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
       RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);
    #endif
 
+   if (surf->Type != EGL_WINDOW_BIT)
+      RETURN_EGL_EVAL(disp, EGL_TRUE);
+
    /* From the EGL 1.5 spec:
     *
     *    If eglSwapBuffers is called and the native window associated with
@@ -1299,6 +1302,9 @@ _eglSwapBuffersWithDamageCommon(_EGLDisplay *disp, _EGLSurface *surf,
        surf != ctx->DrawSurface)
       RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);
 
+   if (surf->Type != EGL_WINDOW_BIT)
+      RETURN_EGL_EVAL(disp, EGL_TRUE);
+
    if ((n_rects > 0 && rects == NULL) || n_rects < 0)
       RETURN_EGL_ERROR(disp, EGL_BAD_PARAMETER, EGL_FALSE);