Change in coreboot[master]: soc/intel: Drop unused lpss functions

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Furquan Shaikh, Patrick Rudolph.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55226 )

Change subject: soc/intel: Drop unused lpss functions
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Patch Set 1:

(1 comment)

Patchset:

PS1: 
looks like cannonlake does

src/soc/intel/cannonlake/fsp_params.c:32:28: error: 'serial_io_dev' undeclared (first use in this function); did you mean 'serirq_mode'?
  dev = pcidev_path_on_root(serial_io_dev[dev_offset]);
                            ^~~~~~~~~~~~~
                            serirq_mode