device/device.h: Rename busses for clarity

This renames bus to upstream and link_list to downstream.

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I80a81b6b8606e450ff180add9439481ec28c2420
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78330
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/drivers/net/phy/m88e1512/m88e1512.c b/src/drivers/net/phy/m88e1512/m88e1512.c
index 07110c6..7e67500 100644
--- a/src/drivers/net/phy/m88e1512/m88e1512.c
+++ b/src/drivers/net/phy/m88e1512/m88e1512.c
@@ -21,10 +21,10 @@
 	if (config->downshift_cnt) {
 		if (config->downshift_cnt > DOWNSHIFT_CNT_MAX) {
 			printk(BIOS_INFO, "%s: Downshift counter for %s is too large.\n",
-					dev_path(dev->bus->dev), dev->chip_ops->name);
+					dev_path(dev->upstream->dev), dev->chip_ops->name);
 		} else {
 			printk(BIOS_DEBUG, "%s: Enable downshift after %d attempts for %s.\n",
-					dev_path(dev->bus->dev), config->downshift_cnt,
+					dev_path(dev->upstream->dev), config->downshift_cnt,
 					dev->chip_ops->name);
 
 			reg = mdio_read(dev, COPPER_SPEC_CTRL_REG_1);
@@ -42,7 +42,7 @@
 	/* Configure LEDs if requested. */
 	if (config->configure_leds) {
 		printk(BIOS_DEBUG, "%s: Set a customized LED mode for %s.\n",
-				dev_path(dev->bus->dev), dev->chip_ops->name);
+				dev_path(dev->upstream->dev), dev->chip_ops->name);
 
 		/* Select page 3 to access LED function control register. */
 		switch_page(dev, 3);
@@ -57,7 +57,7 @@
 	/* INTn can be routed to LED[2] pin. */
 	if (config->enable_int) {
 		printk(BIOS_DEBUG, "%s: INTn is routed to LED[2] pin %s.\n",
-				dev_path(dev->bus->dev), dev->chip_ops->name);
+				dev_path(dev->upstream->dev), dev->chip_ops->name);
 
 		/* Select page 3 to access LED function control register. */
 		switch_page(dev, 3);
@@ -70,7 +70,7 @@
 	/* Set RGMII output impedance manually. */
 	if (config->force_mos) {
 		printk(BIOS_DEBUG, "%s: Set RGMII driver strength manually for %s.\n",
-				dev_path(dev->bus->dev), dev->chip_ops->name);
+				dev_path(dev->upstream->dev), dev->chip_ops->name);
 
 		/* Select page 2 to access RGMII output impedance calibration override
 		   register. */
diff --git a/src/drivers/net/r8168.c b/src/drivers/net/r8168.c
index 70a0f63..6d93ed2 100644
--- a/src/drivers/net/r8168.c
+++ b/src/drivers/net/r8168.c
@@ -364,7 +364,7 @@
 static void r8168_net_fill_ssdt(const struct device *dev)
 {
 	struct drivers_net_config *config = dev->chip_info;
-	const char *path = acpi_device_path(dev->bus->dev);
+	const char *path = acpi_device_path(dev->upstream->dev);
 	u32 address;
 
 	if (!path || !config)