ARM: dts: qcom: Change SMEM base address for 8916

With new memory map for 8916, the base address of SMEM has been
changed. Modify the DT file to address this change.

CRs-Fixed: 658539
Change-Id: I19afb93b272fc82231151984617d2f0d01fba012
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>