fix(juno): remove incorrect assert in sp min boot

There may be some valid configurations where a bootloader runs
before sp_min. In this case the bootloader may pass arguments through
the general purpose registers when passing control to sp_min causing
the assert to fail. Although sp_min may not use the content of the
registers requiring them to be zero seems unnecessary.

Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
Change-Id: I96fdc79626968830985bdd540f89e73b213de7d8
1 file changed