core: fix mapping init debug trace
core: fix mapping init debug trace

Before this change, debug trace shows wrong virtual address range.

Confusion comes from the 'struct tee_mmap_region':

 va           Start address of the virtual 'region' where to map.
              Aligned on 'region' alignment constraint.
 region_size  Byte size of the virtual 'region' where to map.
 pa           Physical start address of the *mapped* buffer.
 size         Byte size of the *mapped* buffer.

The virtual start address of the *mapped* buffer is not stored in the
structure. It must be computed.

Signed-off-by: Etienne Carriere <f21bc5b8f3ea1962eb45af359f1abea6578cab94@linaro.org>
Reviewed-by: Jens Wiklander <7706914404370d7502c27a0eff493dcf491feb51@linaro.org>
Reviewed-by: Joakim Bech <741f90e2a7f4d9afbad8bd50be20560f4cf38962@linaro.org>

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