rk27xx-utils: fix compiler warning on amd64

sizeof(...) has type size_t which is long unsigned int on amd64, and so
the conversion specifier d without length modifier isn't suitable. There
is the length modifier 'z' for size_t arguments, but this is only
available on Linux. So casting to unsigned long and using 'lu' is the
portable fix.

This fixes:
	rkboottool.c:215: warning: format ‘%d’ expects type ‘int’, but argument 4 has type ‘long unsigned int’

1 files changed, 2 insertions, 1 deletions

diff --git a/utils/rk27utils/rkboottool/rkboottool.c b/utils/rk27utils/rkboottool/rkboottool.c
index ad08b0b5f6..8858d37478 100644
--- a/utils/rk27utils/rkboottool/rkboottool.c
+++ b/utils/rk27utils/rkboottool/rkboottool.c
@@ -212,7 +212,8 @@ int main (int argc, char **argv)
     {
         fclose(fp_in);
         fprintf(stderr, "error: can't read %s file header\n", in_filename);
-        fprintf(stderr, "read %d, expected %d\n", ret, sizeof(rkboot_info));
+        fprintf(stderr, "read %d, expected %lu\n",
+                        ret, (unsigned long)sizeof(rkboot_info));
         return -2;
     }