mvebu: update kernel config

mvebu: update kernel config

The config-3.10 doesn't specify the configuration of the backported PCI
features, and the Marvell EBU Device Bus Controller, this will prevent
a clean compile. This patch enables these features to archive a clean compile
without having to specify the state of these configuration after starting to
compile.

Signed-off-by: Seif Mazareeb <seif.mazareeb@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39567 3c298f89-4303-0410-b956-a3cf2f4a3e73