scsi: arcmsr: Remove unnecessary parentheses

Clang warns when multiple pairs of parentheses are used for a single conditional statement.

drivers/scsi/arcmsr/arcmsr_hba.c:4138:19: warning: equality comparison with extraneous parentheses [-Wparentheses-equality]

        if ((acb->dev_id == 0x1680)) {
             ~~~~~~~~~~~~^~~~~~~~~

drivers/scsi/arcmsr/arcmsr_hba.c:4138:19: note: remove extraneous parentheses around the comparison to silence this warning
if ((acb->dev_id == 0x1680)) {
~ ^ ~
drivers/scsi/arcmsr/arcmsr_hba.c:4138:19: note: use '=' to turn this equality comparison into an assignment

        if ((acb->dev_id == 0x1680)) {
                         ^~
                         =
drivers/scsi/arcmsr/arcmsr_hba.c:4140:26: warning: equality comparison
with extraneous parentheses [-Wparentheses-equality]
        } else if ((acb->dev_id == 0x1880)) {
                    ~~~~~~~~~~~~^~~~~~~~~

drivers/scsi/arcmsr/arcmsr_hba.c:4140:26: note: remove extraneous parentheses around the comparison to silence this warning
} else if ((acb->dev_id == 0x1880)) {
~ ^ ~
drivers/scsi/arcmsr/arcmsr_hba.c:4140:26: note: use '=' to turn this equality comparison into an assignment

        } else if ((acb->dev_id == 0x1880)) {
                                ^~
                                =
drivers/scsi/arcmsr/arcmsr_hba.c:4164:26: warning: equality comparison
with extraneous parentheses [-Wparentheses-equality]
        } else if ((acb->dev_id == 0x1214)) {
                    ~~~~~~~~~~~~^~~~~~~~~

drivers/scsi/arcmsr/arcmsr_hba.c:4164:26: note: remove extraneous parentheses around the comparison to silence this warning
} else if ((acb->dev_id == 0x1214)) {
~ ^ ~
drivers/scsi/arcmsr/arcmsr_hba.c:4164:26: note: use '=' to turn this equality comparison into an assignment

        } else if ((acb->dev_id == 0x1214)) {
                                ^~
                                =

3 warnings generated.

---
 drivers/scsi/arcmsr/arcmsr_hba.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

index cc0be4651128..22cf697adab0 100644
@@ -4135,9 +4135,9 @@ static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
 		pci_read_config_byte(acb->pdev, i, &value[i]);
 	}
 	/* hardware reset signal */
-	if ((acb->dev_id == 0x1680)) {
+	if (acb->dev_id == 0x1680) {
 		writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
-	} else if ((acb->dev_id == 0x1880)) {
+	} else if (acb->dev_id == 0x1880) {
 		do {
 			count++;
 			writel(0xF, &pmuC->write_sequence);

@@ -4161,7 +4161,7 @@ static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
 		} while (((readl(&pmuE->host_diagnostic_3xxx) &
 			ARCMSR_ARC1884_DiagWrite_ENABLE) == 0) && (count < 5));
 		writel(ARCMSR_ARC188X_RESET_ADAPTER, &pmuE->host_diagnostic_3xxx);
-	} else if ((acb->dev_id == 0x1214)) {
+	} else if (acb->dev_id == 0x1214) {
 		writel(0x20, pmuD->reset_request);
 	} else {
 		pci_write_config_byte(acb->pdev, 0x84, 0x20);

2.19.0