scsi: ufs: Introduce fixup_dev_quirks vops

Some UFS deivces may have required device quirks or have non-standard
features which are enabled only on specified UFS hosts or for special
customers.

To not "pollute" common device quirk list, i.e. ufs_fixups table, for those
devices mentioned above, introduce "fixup_dev_quirks" vops to allow vendors
to fix or modify device quirks accordingly.

Link: https://lore.kernel.org/r/20200508080115.24233-3-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>