cpu/x86/mp_init.c: Keep track of initial lapic ID inside device_path

It's quite confusing to keep track of lapic ID inside the device
struct and initial lapic ID inside an array.

Change-Id: I4d9f8d23c0b0e5c142f6907593428d8509e4e7bb
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64342
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/arch/x86/cpu.c

@@ -211,24 +211,6 @@ static void set_cpu_ops(struct device *cpu)
 	cpu->ops = driver ? driver->ops : NULL;
 }
 
-/* Keep track of default APIC ids for SMM. */
-static int cpus_default_apic_id[CONFIG_MAX_CPUS];
-
-/* Function to keep track of cpu default apic_id */
-void cpu_add_map_entry(unsigned int index)
-{
-	cpus_default_apic_id[index] = initial_lapicid();
-}
-
-/* Returns default APIC id based on logical_cpu number or < 0 on failure. */
-int cpu_get_apic_id(int logical_cpu)
-{
-	if (logical_cpu >= CONFIG_MAX_CPUS || logical_cpu < 0)
-		return -1;
-
-	return cpus_default_apic_id[logical_cpu];
-}
-
 void cpu_initialize(void)
 {
 	/* Because we busy wait at the printk spinlock.