msm: smem: Ensure the remote spinlock can be fully initialized

The remote spinlock framework may use a software based implementation which
stores the actual lock in shared memory.  This requires the SMEM driver
to be able to find SMEM items that are allocated by the bootloader.  The
SMEM driver requires information from Device Tree before being able to find
SMEM items.

Move the call to init the remote spinlock so that the dependencies for a
software based remote spinlock are met.

Change-Id: Iad1da35f4ebe42d3b72a3da38e430b706691f08f
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>