board: s32z2xxdc2: allow the code to be executed from code RAM

- Trace32 runner: no need to configure TE bit in CFG_CORE
register in the cmm start-up script, it can be configured
at Zephyr start-up code when required (via SCTRL register)

- MPU static regions also needs to be updated for XIP and
non-XIP

Signed-off-by: Dat Nguyen Duy <dat.nguyenduy@nxp.com>