ACPI: add const to acpi_check_resource_conflict()

acpi_check_resource_conflict() doesn't change the resource
it operates on, so the res parameter can be marked const.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/osl.c

@@ -1118,7 +1118,7 @@ __setup("acpi_enforce_resources=", acpi_enforce_resources_setup);
 
 /* Check for resource conflicts between ACPI OperationRegions and native
  * drivers */
-int acpi_check_resource_conflict(struct resource *res)
+int acpi_check_resource_conflict(const struct resource *res)
 {
 	struct acpi_res_list *res_list_elem;
 	int ioport;

include/linux/acpi.h

@@ -240,7 +240,7 @@ extern int pnpacpi_disabled;
 #define PXM_INVAL	(-1)
 #define NID_INVAL	(-1)
 
-int acpi_check_resource_conflict(struct resource *res);
+int acpi_check_resource_conflict(const struct resource *res);
 
 int acpi_check_region(resource_size_t start, resource_size_t n,
 		      const char *name);