scripts/symbolize.py: update help text
scripts/symbolize.py: update help text

Commit 546291f4de9b ("trace: make output more compact") has changed the
format of the abort and panic dumps. Update 'symbolize.py --help'
accordingly.

The help text is also reworked slightly to make it clear that the
script may be used with all kinds of crash dumps (TEE core or TA,
aborts and panics).

Signed-off-by: Jerome Forissier <ced78d268b4c9a0a20a59a9feeebd2ad90da03d3@linaro.org>
Acked-by: Etienne Carriere <f21bc5b8f3ea1962eb45af359f1abea6578cab94@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