Change in coreboot[master]: lib/spd_bin: add get_spd_sn function

[EricR Lai (Code Review)]

EricR Lai has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/40414 )

Change subject: lib/spd_bin: add get_spd_sn function
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Patch Set 4:

(1 comment)

https://review.coreboot.org/c/coreboot/+/40414/4/src/soc/intel/common/block/... 
File src/soc/intel/common/block/smbus/smbuslib.c:

https://review.coreboot.org/c/coreboot/+/40414/4/src/soc/intel/common/block/... 
PS4, Line 92: 	/* smbus will return 0xff if addr is zero */
            : 	if (addr == 0x00) {
            : 		memset(sn, 0, SPD_SN_LEN);
            : 		return;
            : 	}
> If the do_smbus_read_byte() function already handles checking for an invalid address, I don't see a  […]

do_smbus_read_byte not check the address 0x00 but will return 0xff.. if we want this, we need change it.