doc/arch/mips.rst: Update toolchain list

Remove both the ELDK and emdebian links as they are broken, and add a
link to the kernel.org toolchains which we use in CI.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/doc/arch/mips.rst b/doc/arch/mips.rst
index b816608..aeb5824 100644
--- a/doc/arch/mips.rst
+++ b/doc/arch/mips.rst
@@ -8,9 +8,8 @@
 Toolchains
 ----------
 
-  * `ELDK < DULG < DENX <http://www.denx.de/wiki/DULG/ELDK>`_
-  * `Embedded Debian -- Cross-development toolchains <http://www.emdebian.org/crosstools.html>`_
   * `Buildroot <http://buildroot.uclibc.org/>`_
+  * `kernel.org cross-development toolchains <https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/>`_
 
 Known Issues
 ------------