arch/x86/ioapic: Select IOAPIC with SMP

For coreboot proper, I/O APIC programming is not really required,
except for the APIC ID field. We generally do not guard the related
set_ioapic_id() or setup_ioapic() calls with CONFIG(IOAPIC).
In practice it's something one cannot leave unselected, but maintain
the Kconfig for the time being.

Change-Id: I6e83efafcf6e81d1dfd433fab1e89024d984cc1f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55291
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/soc/amd/picasso/Kconfig

@@ -23,7 +23,6 @@ config CPU_SPECIFIC_OPTIONS
 	select DRIVERS_USB_PCI_XHCI
 	select GENERIC_GPIO_LIB
 	select IDT_IN_EVERY_STAGE
-	select IOAPIC
 	select HAVE_ACPI_TABLES
 	select HAVE_EM100_SUPPORT
 	select SOC_AMD_COMMON