tools: image-host.c: use correct output format

tools: image-host.c: use correct output format

When building on a 32bit host the following warning occurs:

tools/image-host.c: In function ‘fit_image_read_data’:
tools/image-host.c:296:56: warning: format ‘%ld’ expects argument of
type ‘long int’, but argument 3 has type ‘__off64_t’
{aka ‘long long int’} [-Wformat=]
   printf("File %s don't have the expected size (size=%ld, expected=%d)\n",
                                                      ~~^
                                                      %lld
          filename, sbuf.st_size, expected_size);
                    ~~~~~~~~~~~~
tools/image-host.c:311:62: warning: format ‘%ld’ expects argument of
type ‘long int’, but argument 4 has type ‘__off64_t’
{aka ‘long long int’} [-Wformat=]
   printf("Can't read all file %s (read %zd bytes, expexted %ld)\n",
                                                            ~~^
                                                            %lld
          filename, n, sbuf.st_size);
                       ~~~~~~~~~~~~

Fix the format strings.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>