soc: qcom: qcom_ipcc: Move to arch_initcall

Some clients expect to send interrupts early in the system boot and are
probed before the IPCC controller is up. These clients that fail to get
their interrupt are forced to reprobe. Move IPCC to an arch_initcall
instead of a module_platform_driver to initialize earlier.

Change-Id: Id04e790668f079d070c9b372fb29e82e7900389c
Signed-off-by: Chris Lew <clew@codeaurora.org>