core: arm: mm: v7: use mm->va to locate the entry of ttb
core: arm: mm: v7: use mm->va to locate the entry of ttb

Use mm->va to locate the entry of ttb, we should not use
mm->pa, because va may be not the same with pa.

Signed-off-by: Peng Fan <7351ee4254d3ae583dd8772c904897a231cf4948@gmail.com>
Reviewed-by: Jens Wiklander <7706914404370d7502c27a0eff493dcf491feb51@linaro.org>

matt2048/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,matt2048/optee_os,pascal-brand-st-dev/optee_os,matt2048/optee_os,matt2048/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os