fix a warning when compiling for 32-bit

Since BNXT_PCIE_STATS_LEN is size_t:

../../ethtool/bnxt.c:66:68: warning: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘unsigned int’ [-Wformat=]
   66 |                 fprintf(stdout, "Length is too short, expected 0x%lx\n",
      |                                                                  ~~^
      |                                                                    |
      |                                                                    long unsigned int
      |                                                                  %x

Fixes: a2f813eeecf1 ("bnxt: Add Broadcom driver support.")
Signed-off-by: Sergei Antonov <saproj@gmail.com>
1 file changed