ARM: dts: msm: add support for QBT1000 on msmcobalt

Add node for QBT1000 (fingerprint sensor) which defines the
clocks which are used by the driver and GPIOs which are used
to signal IPC messaging and finger detection.

Add pmcobalt entry for MTP for physical home-button GPIO.

Change-Id: I3eb92f83b42b0fa28dc73f6e0d4f74ef50375855
Signed-off-by: Lior Barenboim <liorb@codeaurora.org>