linux-yocto/3.0: fix virtio configuration typo

linux-yocto/3.0: fix virtio configuration typo

The recent tools updates in master exposed a typo that has existed
in the 3.0 kernel meta data and that breaks the build for boards still
using the 3.0 kernel.

Bumping the meta SRCREV to pickup the following fix:

[
  commit fa9b8c24e84bb9d75d08d197c84c50ce4f99c424
  Author: Bruce Ashfield <bruce.ashfield@windriver.com>
  Date:   Wed Nov 21 09:24:46 2012 -0500

    meta: fix typo in virtio.scc

    virtio.scc was referring to an invalid/incorrect virto.cfg. Fixing
    this typo fixes the build for boards still using the 3.0 kernel.
]

(From OE-Core rev: b16d72a749ac73a2bd0434f36102c00f6c476bc1)

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>