[M] Change in coreboot[master]: soc/intel/ehl: Add MDIO operation to TSN GbE device

[Arthur Heymans (Code Review)]

Attention is currently required from: Mario Scheithauer, Angel Pons, Lean Sheng Tan.

Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69383 )

Change subject: soc/intel/ehl: Add MDIO operation to TSN GbE device
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Patch Set 12:

(1 comment)

File src/soc/intel/elkhartlake/tsn_gbe.c:

https://review.coreboot.org/c/coreboot/+/69383/comment/0b8fa8cf_a7c7d4dd 
PS12, Line 161: &
> Are you sure? If I do this without address operator '&', I get a compiler error 'incompatible types'.

Eh it's a struct. My bad.