msm: kgsl: Move global memory region to 0x100000000

On a 64bit kernel, a 32bit user application is not
restricted to 3GB limit of virtual memory. It is
allowed to access complete 4GB range.

Move global memory region to 0x100000000 outside of
32bit range on 64bit kernel to increase the virtual
memory range for a 32bit application running on a
64bit kernel. This will also move secure memory
region to 0xF0000000.

Change-Id: I017ac0c052b4d9466f9f1a66af4a83f0636450cb
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>