ACPICA: Remove duplicate table definitions (non-conflicting), cont

Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 710364e..743ce27 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -872,7 +872,8 @@
 	acpi_status status;
 	struct acpi_table_ecdt *ecdt_ptr;
 
-	status = acpi_get_table("ECDT", 1, (struct acpi_table_header **)&ecdt_ptr);
+	status = acpi_get_table(ACPI_SIG_ECDT, 1,
+				(struct acpi_table_header **)&ecdt_ptr);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;