ARM: 8697/1: dma-mapping: Do not pass data to gen_pool_set_algo()

gen_pool_first_fit_order_align() does not make use of additional data,
so pass plain NULL there.
Signed-off-by: NVladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>

arch/arm/mm/dma-mapping.c

@@ -443,7 +443,7 @@ static int __init atomic_pool_init(void)
 
 		gen_pool_set_algo(atomic_pool,
 				gen_pool_first_fit_order_align,
-				(void *)PAGE_SHIFT);
+				NULL);
 		pr_info("DMA: preallocated %zu KiB pool for atomic coherent allocations\n",
 		       atomic_pool_size / 1024);
 		return 0;