ARM: dts: msm: Add dummy clocks and GDSC support for ATOLL

Add dummy clock device nodes for all clock controllers present on
ATOLL. Also add the required GDSCs present on ATOLL and enable
them for the clients to be able to request for the phandle.

Change-Id: I8e28b9a094ede544983cee29de9802cf8fd1331c
Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>