ARM: configs: add ahci_mvebu to mvebu_v7_defconfig

The Marvell Armada 38x platform needs the ahci_mvebu driver enabled
for the AHCI interfaces, so this commit enables the corresponding
Kconfig option in mvebu_v7_defconfig.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397574006-5868-5-git-send-email-thomas.petazzoni@free-electrons.com


Signed-off-by: Jason Cooper <jason@lakedaemon.net>