drivers/dec/21143: Drop dead code

Nothing is selecting this driver. Drop it before it grows moss.

Change-Id: I9e2ba205154a9b37455c522721f5eb2ef9d76b40
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43251
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner

src/drivers/dec/21143/21143.c

@@ -1,40 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-
-#include <device/device.h>
-#include <device/pci_def.h>
-#include <device/pci.h>
-#include <device/pci_ops.h>
-#include <device/pci_ids.h>
-#include <console/console.h>
-
-static void dec_21143_enable(struct device *dev)
-{
-	printk(BIOS_DEBUG, "Initializing DECchip 21143\n");
-
-	// The resource allocator should do this. If not, it needs to be fixed
-	// differently.
-#if 0
-	/* Command and status configuration (offset 0x04) */
-	pci_write_config32(dev, 0x04, 0x02800107);
-	printk(BIOS_DEBUG, "0x04 = %08x (07 01 80 02)\n",
-	       pci_read_config32(dev, 0x04));
-
-	/* Cache line size (offset 0x0C) */
-	pci_write_config8(dev, 0x0C, 0x00);
-	printk(BIOS_DEBUG, "0x0c = %08x (00)\n",
-	       pci_read_config8(dev, 0x0C));
-#endif
-}
-
-static struct device_operations dec_21143_ops = {
-	.read_resources   = pci_dev_read_resources,
-	.set_resources    = pci_dev_set_resources,
-	.enable_resources = pci_dev_enable_resources,
-	.init             = dec_21143_enable,
-};
-
-static const struct pci_driver dec_21143_driver __pci_driver = {
-	.ops    = &dec_21143_ops,
-	.vendor = PCI_VENDOR_ID_DEC,
-	.device = PCI_DEVICE_ID_DEC_21142, // FIXME wrong ID?
-};

src/drivers/dec/21143/Kconfig

@@ -1,2 +0,0 @@
-config DRIVERS_DEC_21143
-	bool

src/drivers/dec/21143/Makefile.inc

@@ -1,5 +0,0 @@
-ifeq ($(CONFIG_DRIVERS_DEC_21143),y)
-
-ramstage-y += 21143.c
-
-endif