tools: ifdtool: Write correct offset on 32-bit machine

On 32-bit machine strtol() returns LONG_MAX which is 0x7fffffff,
which is wrong for u-boot.rom components like u-boot-x86-16bit.bin.
Change to use strtoll() so that it works on both 32-bit and 64-bit
machines.

Reported-by: Fei Wang <wangfei.jimei@gmail.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

tools/ifdtool.c

@@ -987,7 +987,7 @@ int main(int argc, char *argv[])
 					print_usage(argv[0]);
 					exit(EXIT_FAILURE);
 				}
-				ifile->addr = strtol(optarg, NULL, 0);
+				ifile->addr = strtoll(optarg, NULL, 0);
 				ifile->type = opt == 'f' ? IF_fdt :
 					opt == 'U' ? IF_uboot : IF_normal;
 				if (ifile->type == IF_fdt)