ACPI / processor: remove pointless variable initialization

The 'errata' variable is a global variable which is set to zero,
no need to do that with a memset in the init function.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 9c9288b..e78c2a5 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -905,8 +905,6 @@
 	if (acpi_disabled)
 		return 0;
 
-	memset(&errata, 0, sizeof(errata));
-
 	result = acpi_bus_register_driver(&acpi_processor_driver);
 	if (result < 0)
 		return result;