sb,soc/intel: Use register_new_ioapic_gsi0()

Change-Id: I6b0e4021595fb160ae3bf798468f4505b460266f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55314
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/soc/intel/broadwell/pch/lpc.c

@@ -33,7 +33,7 @@ static void pch_enable_ioapic(struct device *dev)
 	/* PCH-LP has 40 redirection entries */
 	ioapic_set_max_vectors(VIO_APIC_VADDR, 40);
 
-	setup_ioapic(VIO_APIC_VADDR, 0x02);
+	register_new_ioapic_gsi0(VIO_APIC_VADDR);
 }
 
 static void enable_hpet(struct device *dev)