x86/alix2: add kernel config for 3.10

x86/alix2: add kernel config for 3.10

Taken from the 'alix2: update to LINUX_VERSION 3.10.9'
patch: http://patchwork.openwrt.org/patch/3971/.

Russell says in the original patch:

"Initial whack at updating alix2 to a current kernel. It builds
and runs without problems so far. I copied target/linux/config-3.8,
target/linux/x86/alix2/config-3.8, and target/linux/patches-3.8 to
their 3.10 equivalents and tweaked until it built.  The patches
required no changes."

The current patch contains additional configuration tweaks.

Signed-off-by: Russell Senior <russell@personaltelco.net>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37868 3c298f89-4303-0410-b956-a3cf2f4a3e73