scsi: ufs: Adjust logic in common ADAPT helper

The introduction of ufshcd_dme_configure_adapt() refactored out duplication
from the Mediatek and Qualcomm drivers.

Both these implementations had the logic of:

    gear_tx == UFS_HS_G4 => PA_INITIAL_ADAPT
    gear_tx != UFS_HS_G4 => PA_NO_ADAPT

but now both implementations pass PA_INITIAL_ADAPT as "adapt_val" and if
gear_tx is not UFS_HS_G4 that is replaced with PA_INITIAL_ADAPT. In other
words, it's PA_INITIAL_ADAPT in both above cases.

The result is that e.g. Qualcomm SM8150 has no longer functional UFS, so
adjust the logic to match the previous implementation.

Link: https://lore.kernel.org/r/20201121044810.507288-1-bjorn.andersson@linaro.org
Fixes: fc85a74e ("scsi: ufs: Refactor ADAPT configuration function")
Reviewed-by: Can Guo <cang@codeaurora.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufshcd.c

@@ -3602,7 +3602,7 @@ int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
 	int ret;
 
 	if (agreed_gear != UFS_HS_G4)
-		adapt_val = PA_INITIAL_ADAPT;
+		adapt_val = PA_NO_ADAPT;
 
 	ret = ufshcd_dme_set(hba,
 			     UIC_ARG_MIB(PA_TXHSADAPTTYPE),