device: Use pcidev_on_root()

Change-Id: Icf34b39d80f6e46d32a39b68f38fb2752c0bcebc
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/26484
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Piotr Król <piotr.krol@3mdeb.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/soc/intel/braswell/chip.c b/src/soc/intel/braswell/chip.c
index ccd6c9f..7a63b5b 100644
--- a/src/soc/intel/braswell/chip.c
+++ b/src/soc/intel/braswell/chip.c
@@ -86,7 +86,7 @@
 
 void soc_silicon_init_params(SILICON_INIT_UPD *params)
 {
-	struct device *dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC));
+	struct device *dev = pcidev_on_root(LPC_DEV, LPC_FUNC);
 	struct soc_intel_braswell_config *config;
 
 	if (!dev) {
@@ -406,7 +406,7 @@
 **/
 int SocStepping(void)
 {
-	struct device *dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC));
+	struct device *dev = pcidev_on_root(LPC_DEV, LPC_FUNC);
 	u8 revid = pci_read_config8(dev, 0x8);
 
 	switch (revid & B_PCH_LPC_RID_STEPPING_MASK) {