soc/intel/meteorlake: Use common UART device list driver

Remove platform-specific uart.c and switch to the common UART device
list driver. This eliminates duplicate code.

The meteorlake uart.c simply defined uart_devices[] array. The common
driver now handles this using the SOC_UART_DEVFN(n) macro defined in
pci_devs.h which uses token concatenation to map to platform-specific
PCI_DEVFN_UARTn definitions.

This commit:
- Selects SOC_INTEL_COMMON_FEATURE and
  SOC_INTEL_COMMON_FEATURE_UART_DEVICES in Kconfig
- Removes uart.c and updates Makefile.mk

Change-Id: Ic791eaa2521a44aba330e149fb0185094dd9ccf7
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91243
Reviewed-by: Kim, Wonkyu <wonkyu.kim@intel.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/meteorlake/Kconfig

@@ -86,6 +86,8 @@ config SOC_INTEL_METEORLAKE
 	select SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC
 	select SOC_INTEL_COMMON_BLOCK_XHCI
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
+	select SOC_INTEL_COMMON_FEATURE
+	select SOC_INTEL_COMMON_FEATURE_UART_DEVICES
 	select SOC_INTEL_COMMON_BASECODE
 	select SOC_INTEL_COMMON_BASECODE_RAMTOP
 	select SOC_INTEL_COMMON_FSP_RESET

src/soc/intel/meteorlake/Makefile.mk

@@ -10,7 +10,6 @@ all-y += gspi.c
 all-y += i2c.c
 all-y += pmutil.c
 all-y += spi.c
-all-y += uart.c
 all-y += gpio.c
 
 bootblock-y += bootblock/bootblock.c
@@ -55,7 +54,6 @@ smm-y += p2sb.c
 smm-y += pmutil.c
 smm-y += smihandler.c
 smm-y += soc_info.c
-smm-y += uart.c
 smm-y += xhci.c
 
 CPPFLAGS_common += -I$(src)/soc/intel/meteorlake

src/soc/intel/meteorlake/uart.c

@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <commonlib/helpers.h>
-#include <soc/pci_devs.h>
-
-const unsigned int uart_devices[] = {
-	PCI_DEVFN_UART0,
-	PCI_DEVFN_UART1,
-	PCI_DEVFN_UART2,
-};
-
-const int uart_devices_size = ARRAY_SIZE(uart_devices);