soc/intel/meteorlake: Use common GSPI devfn mapping

Replace platform-specific gspi.c with the common GSPI device function
mapping implementation.

Changes:
- Select SOC_INTEL_COMMON_FEATURE_GSPI_DEVFN in Kconfig
- Define SOC_GSPI_DEVFN(n) macro in pci_devs.h
- Remove platform-specific gspi.c file

Change-Id: Ib2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91315
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/meteorlake/Kconfig

@@ -87,6 +87,7 @@ config SOC_INTEL_METEORLAKE
 	select SOC_INTEL_COMMON_BLOCK_XHCI
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_FEATURE
+	select SOC_INTEL_COMMON_FEATURE_GSPI_DEVFN
 	select SOC_INTEL_COMMON_FEATURE_I2C_DEVFN
 	select SOC_INTEL_COMMON_FEATURE_UART_DEVICES
 	select SOC_INTEL_COMMON_BASECODE

src/soc/intel/meteorlake/Makefile.mk

@@ -6,7 +6,6 @@ subdirs-y += ../../../cpu/intel/microcode
 subdirs-y += ../../../cpu/intel/turbo
 
 # all (bootblock, verstage, romstage, postcar, ramstage)
-all-y += gspi.c
 all-y += pmutil.c
 all-y += spi.c
 all-y += gpio.c

src/soc/intel/meteorlake/gspi.c

@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-
-#include <intelblocks/gspi.h>
-#include <soc/pci_devs.h>
-
-int gspi_soc_bus_to_devfn(unsigned int gspi_bus)
-{
-	switch (gspi_bus) {
-	case 0:
-		return PCI_DEVFN_GSPI0;
-	case 1:
-		return PCI_DEVFN_GSPI1;
-	case 2:
-		return PCI_DEVFN_GSPI2;
-	}
-	return -1;
-}

src/soc/intel/meteorlake/include/soc/pci_devs.h

@@ -242,5 +242,6 @@
 #define SA_DEV_IGD		PCI_DEV_IGD
 #define SA_DEVFN_IGD		PCI_DEVFN_IGD
 #define SOC_I2C_DEVFN(n)	PCI_DEVFN_I2C##n
+#define SOC_GSPI_DEVFN(n)	PCI_DEVFN_GSPI##n
 
 #endif // _SOC_METEORLAKE_PCI_DEVS_H_