habanalabs: don't clear previous f/w indications

Once we read indication of whether f/w is doing the reset, we don't
want to clear it, until the next time we read this indication.

Otherwise, we might be in a state of wrong indication.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>