defconfig: msmferrum: Sync 1gb defconfig with defconfig

The current msmferrum-1gb_defconfig is out of sync with
512mb defconfig. Sync it back to msmferrum_defconfig.

Change-Id: I4b9435eb20b99ff2ae40c5250b13066f96adb133
Signed-off-by: Kishan Kumar <kishank@codeaurora.org>