scsi: ufs: Refactor ADAPT configuration function

Several vendors are using same code to configure ADAPT settings for
HS-G4. Simply refactor it as common function.

Link: https://lore.kernel.org/r/20201116065054.7658-8-stanley.chu@mediatek.com


Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>