soc/intel/apl/acpi: Do not report 8259 PICs

The IRQ tables don't support this path, so we shouldn't report presence
of the legacy PICs. As the _PIC method is optional and we ignore the
passed parameter anyway, drop it.

Change-Id: I51301a600e16f74fde00fdcb4595e1f47a52e207
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/29833
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Lance Zhao <lance.zhao@gmail.com>

src/soc/intel/apollolake/Kconfig

@@ -20,6 +20,7 @@ if SOC_INTEL_APOLLOLAKE
 config CPU_SPECIFIC_OPTIONS
 	def_bool y
 	select ACPI_INTEL_HARDWARE_SLEEP_VALUES
+	select ACPI_NO_PCAT_8259
 	select ARCH_BOOTBLOCK_X86_32
 	select ARCH_RAMSTAGE_X86_32
 	select ARCH_ROMSTAGE_X86_32

src/soc/intel/apollolake/acpi/platform.asl

@@ -18,19 +18,3 @@
 /* Enable ACPI _SWS methods */
 #include <soc/intel/common/acpi/acpi_wake_source.asl>
 #include <soc/intel/common/acpi/platform.asl>
-
-Name(\PICM, Zero) // IOAPIC/8259
-
-/*
- * The _PIC method is called by the OS to choose between interrupt
- * routing via the i8259 interrupt controller or the APIC.
- *
- * _PIC is called with a parameter of 0 for i8259 configuration and
- * with a parameter of 1 for Local Apic/IOAPIC configuration.
- */
-
-Method (_PIC, 1)
-{
-	/* Remember the OS' IRQ routing choice. */
-	Store (Arg0, PICM)
-}