[S] Change in coreboot[main]: sb/intel/bd82x6x/pcie: Use defines

[Patrick Rudolph (Code Review)]

Attention is currently required from: Kyösti Mälkki.

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/78293?usp=email )

Change subject: sb/intel/bd82x6x/pcie: Use defines
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Patch Set 3:

(1 comment)

File src/southbridge/intel/bd82x6x/pcie.c:

https://review.coreboot.org/c/coreboot/+/78293/comment/fd92a637_e365fe06 :
PS1, Line 135: 		reg32 |= (1 << 17);
> Would this be cleaner as ```4 << 15``` and ```2 << 15``` below?

Done