ARM: dts: msm: SSC SPI device for fingerprint sensor for MSM8996

Fingerprint sensor is connected to SSC SPI for ultrasonic wakeup
feature. Add SSC SPI device to facilitate enablement.

Change-Id: I2078f148e34b9e4b8ec7fbf0fb9b3f2e89893fac
Acked-by: Tamoghna Sadhu <tsadhu@qti.qualcomm.com>
Signed-off-by: Ian Maund <imaund@codeaurora.org>