[lib][sm] Allow SMC_FC_FIQ_ENTER after panic

If an fiq triggers after platform_halted allow the SMC_FC_FIQ_ENTER call
to go through to the gic driver. Otherwise we would try to return to the
non-secure world with the fiq still pending and it would immedeatly call
SMC_FC_FIQ_ENTER again.

Bug: 64307730
Change-Id: I95ba98ec337810f2449fb12bece6e23408535334
1 file changed