ARM: mvebu: update v7 defconfig with useful options

Turn on a bunch of options to make my cubox bootable/usable:

PRINTK_TIME
EXT4 (and turn off 2/3 since 4 can mount all filesystems)
MV643XX_ETH for Dove
SDHCI for Dove
DEVTMPFS
PACKET and UNIX protocol support

Much of the other churn is just due to reorderings in the defconfig

Signed-off-by: Olof Johansson <olof@lixom.net>
Link: https://lkml.kernel.org/r/1408729202-11064-1-git-send-email-olof@lixom.net
Signed-off-by: Jason Cooper <jason@lakedaemon.net>