mailbox: bcm-pdc: drop of_match_ptr for ID table

The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
matching via PRP0001, even though it might not be relevant here).

  drivers/mailbox/bcm-pdc-mailbox.c:1474:34: error: ‘pdc_mbox_of_match’ defined but not used [-Werror=unused-const-variable=]

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

Author: krzk

drivers/mailbox/bcm-pdc-mailbox.c

@@ -1635,7 +1635,7 @@ static struct platform_driver pdc_mbox_driver = {
 	.remove = pdc_remove,
 	.driver = {
 		   .name = "brcm-iproc-pdc-mbox",
-		   .of_match_table = of_match_ptr(pdc_mbox_of_match),
+		   .of_match_table = pdc_mbox_of_match,
 		   },
 };
 module_platform_driver(pdc_mbox_driver);