ARM: mvebu: enable MSI support in mvebu_v7_defconfig

Since Armada 370, XP, 375 and 38x have PCI MSI support, it makes sense
to enable CONFIG_PCI_MSI in mvebu_v7_defconfig.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400598964-2062-1-git-send-email-thomas.petazzoni@free-electrons.com


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