msm: memory: Use already defined MT_MEMORY_SO type

MT_MEMORY_SO is now defined in the kernel so replace the old
usage of the MT_DEVICE_STRONGLY_ORDERED type which is no
longer defined in the latest kernel revisions.

Change-Id: Ie942520b78b682f8006510f08892f161e6bc7812
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
1 file changed