Change in coreboot[master]: soc/common/smbus: Add support for reading spd data via smbus for DDR5

[Meera Ravindranath (Code Review)]

Attention is currently required from: Maulik V Vaghela, Ravishankar Sarawadi, Tim Wawrzynczak, Reka Norman, Nick Vaccaro, Balaji Manigandan, Raj Astekar, Patrick Rudolph, Karthik Ramasubramanian.
Meera Ravindranath has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52731 )

Change subject: soc/common/smbus: Add support for reading spd data via smbus for DDR5
......................................................................

Patch Set 8:

(3 comments)

File src/include/spd_bin.h:

https://review.coreboot.org/c/coreboot/+/52731/comment/e38e7915_722cc9cf 
PS7, Line 42:
> nit: extra space

Done

File src/soc/intel/common/block/smbus/smbuslib.c:

https://review.coreboot.org/c/coreboot/+/52731/comment/4eda481d_7e0f34e7 
PS7, Line 55:
> Can we add a comment here about the hub addressing, e,g. […]

Done

https://review.coreboot.org/c/coreboot/+/52731/comment/49bc2cd6_cb99f992 
PS7, Line 100: 	const struct spd_offset_table *tbl;
             : 	const struct spd_offset_table *table_select;
             : 	u32 byte;
             : 	u32 stop;
             : 	u8 page;
             : 
             : 	page = (u8) (~0);
             : 	table_select = (struct spd_offset_table *)spd_ddr5_table;
             : 	stop = ARRAY_SIZE(spd_ddr5_table)
> I think these make more sense declared in the `is_spd5_hub` if scope as they are specific to that ca […]

Done