Change in coreboot[master]: soc/intel/alderlake/retimer.c: Do not access TCSS devices on ADL-S

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Michał Żygowski.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63501 )

Change subject: soc/intel/alderlake/retimer.c: Do not access TCSS devices on ADL-S
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Patch Set 1:

(1 comment)

Patchset:

PS1: 
Why not just modify the Makefile, e.g.

```
+
+ifneq ($(SOC_INTEL_ALDERLAKE_PCH_S,y)
 ramstage-y += retimer.c
+endif
 ramstage-y += soundwire.c
 ramstage-y += systemagent.c
 ramstage-y += tcss.c
```

It's likely that ADL-S boards would not include the DRIVERS_INTEL_USB4_RETIMER Kconfig option, so this retimer function is not needed in that case anyway.