scsi: hisi_sas: do not reset the timer to wait for phyup when phy already up

driver inclusion
category: bugfix
bugzilla: NA

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We found out that after phy up, the hardware report another oob interrupt,
but did not follow a phy up interrupt. like:

oob ready -> phy up -> DEV found -> oob read -> wait phy up -> timeout

We run link reset when wait phy up timeout, and it make a normal disk into
reset processing. So we made some circumvention action in the code, so that
this abnormal oob interrupt will not start the timer to wait for phy up.

Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: gao chuan <gaochuan4@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>