logic_pio: Constify fwnode_handle

The fwnode_handle passed into find_io_range_by_fwnode() and
logic_pio_trans_hwaddr() are not modified, so make them const.

Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rob Herring (Arm) <[e-mail]>

include/linux/logic_pio.h

···
 
 struct logic_pio_hwaddr {
 	struct list_head list;
-	struct fwnode_handle *fwnode;
+	const struct fwnode_handle *fwnode;
 	resource_size_t hw_start;
 	resource_size_t io_start;
 	resource_size_t size; /* range size populated */
···
 #endif /* CONFIG_INDIRECT_PIO */
 #define MMIO_UPPER_LIMIT (IO_SPACE_LIMIT - PIO_INDIRECT_SIZE)
 
-struct logic_pio_hwaddr *find_io_range_by_fwnode(struct fwnode_handle *fwnode);
-unsigned long logic_pio_trans_hwaddr(struct fwnode_handle *fwnode,
+struct logic_pio_hwaddr *find_io_range_by_fwnode(const struct fwnode_handle *fwnode);
+unsigned long logic_pio_trans_hwaddr(const struct fwnode_handle *fwnode,
 			resource_size_t hw_addr, resource_size_t size);
 int logic_pio_register_range(struct logic_pio_hwaddr *newrange);
 void logic_pio_unregister_range(struct logic_pio_hwaddr *range);

lib/logic_pio.c

···
  *
  * Traverse the io_range_list to find the registered node for @fwnode.
  */
-struct logic_pio_hwaddr *find_io_range_by_fwnode(struct fwnode_handle *fwnode)
+struct logic_pio_hwaddr *find_io_range_by_fwnode(const struct fwnode_handle *fwnode)
 {
 	struct logic_pio_hwaddr *range, *found_range = NULL;
 
···
  *
  * Returns Logical PIO value if successful, ~0UL otherwise
  */
-unsigned long logic_pio_trans_hwaddr(struct fwnode_handle *fwnode,
+unsigned long logic_pio_trans_hwaddr(const struct fwnode_handle *fwnode,
 				     resource_size_t addr, resource_size_t size)
 {
 	struct logic_pio_hwaddr *range;