egl: image_dma_buf_export - use KHR 64-bit type

After talking to Jon Leech he suggested this should be fine.

update spec to the version in the registry.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index ec41aa3..ba1d0dd 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -2013,7 +2013,7 @@
 EGLBoolean EGLAPIENTRY
 eglExportDMABUFImageQueryMESA(EGLDisplay dpy, EGLImageKHR image,
                               EGLint *fourcc, EGLint *nplanes,
-                              EGLuint64MESA *modifiers)
+                              EGLuint64KHR *modifiers)
 {
    _EGLDisplay *disp = _eglLockDisplay(dpy);
    _EGLImage *img = _eglLookupImage(image, disp);