mb/prodrive/hermes: Harden `eeprom_read_serial()`

The `eeprom_read_serial()` function could return a non-NULL terminated
string if the serial in EEPROM has `HERMES_SN_PN_LENGTH` (32) non-NULL
characters. Make this impossible by adding an additional character for
a NULL byte in the static buffer, which always gets set to 0 (NULL).

Change-Id: I306fe1b6dd3836156afca786e352d2a7dca0d77c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68322
Reviewed-by: Patrick Georgi <patrick@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>

0 files changed, 0 insertions, 0 deletions