cpu/x86/lapic: Move LAPIC configuration to MP init

Implementation for setup_lapic() did two things -- call
enable_lapic() and virtual_wire_mode_init().

In PARALLEL_MP case enable_lapic() was redundant as it
was already executed prior to initialize_cpu() call.
For the !PARALLEL_MP case enable_lapic() is added to
AP CPUs.

Change-Id: I5caf94315776a499e9cf8f007251b61f51292dc5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58387
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/cpu/qemu-x86/qemu.c

@@ -2,11 +2,9 @@
 
 #include <cpu/cpu.h>
 #include <device/device.h>
-#include <cpu/x86/lapic.h>
 
 static void qemu_cpu_init(struct device *dev)
 {
-	setup_lapic();
 }
 
 static struct device_operations cpu_dev_ops = {