defconfig: msm8994: Enable usb host driver for joystick/gamepad

Current kernel configuration does not support joystick/gamepads.
Controllers like Logitech F710 requires this driver to work.

CRs-Fixed: 758193
Change-Id: Id2e75e019eff3855b5fa2cc778093af68aef1511
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>