docs: Update EGL documentation.

Add --enable-gallium-swrast to the example.  Document missing
--with-egl-driver-dir and update TODOs.
diff --git a/docs/egl.html b/docs/egl.html
index 0882598..305e5f6 100644
--- a/docs/egl.html
+++ b/docs/egl.html
@@ -32,7 +32,7 @@
 the Gallium driver for your hardware.  For example</p>
 
 <pre>
-  $ ./configure --with-state-trackers=egl,es,vega --enable-gallium-intel
+  $ ./configure --with-state-trackers=egl,es,vega --enable-gallium-{swrast,intel}
 </pre>
 
 <p>The main library will be enabled by default.  The <code>egl</code> state
@@ -62,6 +62,13 @@
 
 </li>
 
+<li><code>--with-egl-driver-dir</code>
+
+<p>The directory EGL drivers should be installed to.  If not specified, EGL
+drivers will be installed to <code>${libdir}/egl</code>.</p>
+
+</li>
+
 <li><code>--with-egl-displays</code>
 
 <p>List the window system(s) to support.  It is by default <code>x11</code>,
@@ -227,6 +234,7 @@
 <li>Pass the conformance tests</li>
 <li>Better automatic driver selection: <code>EGL_DISPLAY</code> loads all
 drivers and might eat too much memory.</li>
+<li>Stop using <code>glxinit.c</code> and sources from <code>src/glx/x11/</code></li>
 
 </ul>