qseecom: allocate sglist table from shmbridge for kernel client api

When SHMbridge is introduced, kernel client api qseecom_start_app()
should also allocate sglist table from bridge; otherwise, the table
address is still initialized as NULL and causes buffer flush
operation issue.

Change-Id: I9593f1fc0ddd2b351a55a21e88361a8e70ef8c5c
Signed-off-by: Zhen Kong <zkong@codeaurora.org>