defconfig: arm64: msm: Enable per process pagetable feature for graphics

Turn on the per process pagetable feature for graphics on arm64.
This creates a separate graphics pagetable for every process using
the graphics core. This allows better security and separation of
address space of different processes.

Change-Id: I88a3a57b52d41165b4c1186fdc276bedc00ebc2c
Signed-off-by: Shrenuj Bansal <shrenujb@codeaurora.org>