iscsi_ibft: fix warning in reserve_ibft_region()

Use %pa to print a physical address.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>

drivers/firmware/iscsi_ibft_find.c

@@ -83,7 +83,7 @@ void __init reserve_ibft_region(void)
 				if (pos + len <= (IBFT_END-1)) {
 					ibft_phys_addr = pos;
 					memblock_reserve(ibft_phys_addr, PAGE_ALIGN(len));
-					pr_info("iBFT found at 0x%lx.\n", ibft_phys_addr);
+					pr_info("iBFT found at %pa.\n", &ibft_phys_addr);
 					return;
 				}
 			}