ARM: dts: msm: Add syscon nodes to the sdmshrike target

Provide an entry to invoke the syscon driver. Associate
the global clock controller, camera clock controller, and
GPU clock controller with the syscon driver for clock
measurement support.

Change-Id: I0ecf832c89a5d773c2e237b5a05e0cea52f7f515
Signed-off-by: Anant Goel <anantg@codeaurora.org>