defconfig: msmferrum: enable Synaptics V2 driver

Enable configuration needed for the operation of Synaptics V2
driver in msmferrum defconfig. This driver is used for touch
screen operation.

Change-Id: Ibd2fa0a1adfb5ef0ee0a38ae850924c692d5e79b
Signed-off-by: Himanshu Aggarwal <haggarwa@codeaurora.org>