ACPI: EC: fix compilation warning

Fix the warning introduced in commit c5279dee26c0e8d7c4200993bfc4b540d2469598,
and give the dummy variable a more verbose name.

  drivers/acpi/ec.c: In function 'acpi_ec_ecdt_probe':
  drivers/acpi/ec.c:1015: warning: ISO C90 forbids mixed declarations and code

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/ec.c

@@ -979,6 +979,7 @@ int __init acpi_ec_ecdt_probe(void)
 {
 	acpi_status status;
 	struct acpi_table_ecdt *ecdt_ptr;
+	acpi_handle dummy;
 
 	boot_ec = make_acpi_ec();
 	if (!boot_ec)
@@ -1011,7 +1012,6 @@ int __init acpi_ec_ecdt_probe(void)
 	}
 	/* This workaround is needed only on some broken machines,
 	 * which require early EC, but fail to provide ECDT */
-	acpi_handle x;
 	printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
 	status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
 					boot_ec, NULL);
@@ -1022,7 +1022,7 @@ int __init acpi_ec_ecdt_probe(void)
 	 * which needs it, has fake EC._INI method, so use it as flag.
 	 * Keep boot_ec struct as it will be needed soon.
 	 */
-	if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x)))
+	if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &dummy)))
 		return -ENODEV;
 install:
 	if (!ec_install_handlers(boot_ec)) {