AMCC 440 SPI question

["Steven A. Falco" <sfalco@harris.com>]

The yosemite.dts has the following entry, which leads me to believe
that there is SPI support.  I'd like to do something similar for a
Sequoia board, but looking in Josh's "next" branch, I don't see any
driver that would recognize the spi-440ep string.  So my question is,
is there a SPI driver for the PPC440, that is .dts aware?

			spi@ef600900 {
				compatible = "amcc,spi-440ep";
				reg = <ef600900 6>;
				interrupts = <8 4>;
				interrupt-parent = <&UIC0>;
			};

Also, googling for a driver, I find the patch that introduced this
.dts file:

Patch: [PATCH 1/3][POWERPC] 4xx: Add AMCC 440EP Yosemite DTS
patchwork.ozlabs.org/linuxppc/patch?id=16992

However, when I click on the patchwork link, I get a 404 error.
Perhaps this just means the patch is old and has been removed
from patchwork.  But since it is a "1 of 3", I was hoping one of
the other parts would contain the actual spi-440ep driver code.

Hints greatly appreciated!

	Steve