msm: mink: Add shared memory bridge support for smcinvoke driver

As per SHMBridge APIs, any memory that has to be shared with TZ
should come from SHMBridge. Usage of Linux kernel memory APIs
such as kmalloc() API is discouraged if memory has to be shared
with TZ. Hence, replacing kmalloc() API with corresponding
SHMBridge API.

Change-Id: Ib28392246d3e6ac6357e4a79bd59d7413f950eb7
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
Signed-off-by: Dinesh K Garg <dineshg@codeaurora.org>