soc/intel: Replace config_of_path() with config_of_soc()

The previously provided device path made no difference, all
integrated PCI devices point back to the same chip_info
structure.

Change reduces the exposure of various SA_DEVFN_xx and
PCH_DEVFN_xx from (ugly) soc/pci_devs.h.

Change-Id: Ibf13645fdd3ef7fd3d5c8217bb24d7ede045c790
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35656
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/quark/romstage/fsp2_0.c

@@ -93,7 +93,7 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *fspm_upd, uint32_t version)
 			"Microcode file (rmu.bin) not found.");
 
 	/* Locate the configuration data from devicetree.cb */
-	config = config_of_path(LPC_DEV_FUNC);
+	config = config_of_soc();
 
 	/* Update the architectural UPD values. */
 	aupd = &fspm_upd->FspmArchUpd;