msm: Change the address for Trustzone buffer log.

DDR memory is used and Trustzone buffer address is changed,
so no need to do ioremap for the location unlike previously where
the memory was again pointing to IMEM location.

Change-Id: Ia30cf45bc71d2def36350779647e4b179e3bae96
Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>