drivers/ipmi: Use correct unsigned int length modifier

Building an image for OCP DeltaLake with `x86_64-linux-gnu-gcc-11` fails
with the format warning below as the size of char * differs between
32-bit and 64-bit.

        CC         ramstage/drivers/ipmi/ipmi_fru.o
    src/drivers/ipmi/ipmi_fru.c: In function 'read_fru_chassis_info_area':
    src/drivers/ipmi/ipmi_fru.c:192:57: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'unsigned int' [-Werror=format=]
      192 |                 printk(BIOS_ERR, "%s failed to malloc %ld bytes for "
          |                                                       ~~^
          |                                                         |
          |                                                         long int
          |                                                       %d
      193 |                         "chassis custom data array.\n", __func__,
      194 |                         info->custom_count * sizeof(char *));
          |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          |                                            |
          |                                            unsigned int
    src/drivers/ipmi/ipmi_fru.c: In function 'read_fru_board_info_area':
    src/drivers/ipmi/ipmi_fru.c:291:57: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'unsigned int' [-Werror=format=]
      291 |                 printk(BIOS_ERR, "%s failed to malloc %ld bytes for "
          |                                                       ~~^
          |                                                         |
          |                                                         long int
          |                                                       %d
      292 |                         "board custom data array.\n", __func__,
      293 |                         info->custom_count * sizeof(char *));
          |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          |                                            |
          |                                            unsigned int
    src/drivers/ipmi/ipmi_fru.c: In function 'read_fru_product_info_area':
    src/drivers/ipmi/ipmi_fru.c:398:57: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'unsigned int' [-Werror=format=]
      398 |                 printk(BIOS_ERR, "%s failed to malloc %ld bytes for "
          |                                                       ~~^
          |                                                         |
          |                                                         long int
          |                                                       %d
      399 |                         "product custom data array.\n", __func__,
      400 |                         info->custom_count * sizeof(char *));
          |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          |                                            |
          |                                            unsigned int

Fix the mismatches in `read_fru_chassis_info_area()` by using the length
modifier `z` for size_t as that is what `size_of` yields to.

Change-Id: If0c4266b19d56fa88abc397f305154d473ae1a93
Found-by: gcc (Debian 11.2.0-10) 11.2.0
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59055
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

0 files changed, 0 insertions, 0 deletions