of: align RESERVEDMEM_OF_DECLARE function callbacks to other callbacks

All the parameters for RESERVEDMEM_OF_DECLARE function callbacks are
members of struct reserved_mem, so just pass the struct ptr to callback
functions so the function callback is more in line with other OF match
table callbacks.

Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>

drivers/of/of_reserved_mem.c

@@ -188,7 +188,7 @@ static int __init __reserved_mem_init_node(struct reserved_mem *rmem)
 		if (!of_flat_dt_is_compatible(rmem->fdt_node, compat))
 			continue;
 
-		if (initfn(rmem, rmem->fdt_node, rmem->name) == 0) {
+		if (initfn(rmem) == 0) {
 			pr_info("Reserved memory: initialized node %s, compatible id %s\n",
 				rmem->name, compat);
 			return 0;