Fix printf format strings

Change-Id: Ifef56bf195592fe148a2d49e8f3c1ddc23623e2c
diff --git a/libupgrade/hmx_upgrade_flash.c b/libupgrade/hmx_upgrade_flash.c
index 772948c..7a22a01 100644
--- a/libupgrade/hmx_upgrade_flash.c
+++ b/libupgrade/hmx_upgrade_flash.c
@@ -116,7 +116,7 @@
 {
   int ret;
 
-  if (libupgrade_verbose) printf("[%s] offset %08x, size %d, data = %02x\n",
+  if (libupgrade_verbose) printf("[%s] offset %08lx, size %d, data = %02x\n",
                                  __FUNCTION__, offset, size, data[0] );
 
   if ( fd_nvram < 0 ) {
@@ -157,7 +157,7 @@
 {
   int ret;
 
-  if (libupgrade_verbose) printf("[%s] offset %08x, size %d, data = %02x\n",
+  if (libupgrade_verbose) printf("[%s] offset %08lx, size %d, data = %02x\n",
                                  __FUNCTION__, offset, size, data[0] );
 
   /* */