habanalabs: support hard-reset scheduling during soft-reset

As hard-reset can be requested during soft-reset, driver must allow
it or else critical events received during soft-reset will be
ignored.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>