power: reset: Remove secure boot mode check

Debug policy of secure devices take care of nullifying
the ram dumps in secure boot mode. So no need to check
about secure boot mode in reboot driver to enable
download feature.

Change-Id: Idb5c93aca630f0093fccc2997bf50e7958dfbf54
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>