slim_msm: Add support for new version of slimbus controller core

The new core has different register offsets for ported generic
device, corresponding port registers, and execution environment
specific registers.
Hardware version register is used to distinguish new core from
the older core.

Change-Id: I6a9694d4b466b1b7e244f92145b1e27ab6462362
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>