Change in coreboot[master]: soc/intel/ehl: Provide function to change PHY-to-MAC IRQ polarity

[Mario Scheithauer (Code Review)]

Attention is currently required from: Paul Menzel, Werner Zeh.
Mario Scheithauer has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63888 )

Change subject: soc/intel/ehl: Provide function to change PHY-to-MAC IRQ polarity
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Patch Set 4:

(1 comment)

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

https://review.coreboot.org/c/coreboot/+/63888/comment/e076d025_123b7755 
PS2, Line 38: udelay(TSN_GMII_DELAY_US);
> I tested it and it seems to work the same way.

Done