misc: isa1200: add device tree support

Add device tree (DT) support for isa1200.  Extract device
properties from DT and store it in platform data structure.

Change-Id: I9ed9cc36cb07db00634b9e73a8052e62d313d484
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
misc: isa1200: properly disable clocks

Since clk_prepare_enable is being used when enabling clocks,
clk_disable_prepare should be used to disable them.

CRs-fixed: 453579
Change-Id: Ic15c99e1fa82e45a3b9165af60c104a6bb736f92
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Merge "misc: isa1200: add device tree support"
Merge "misc: isa1200: properly disable clocks"