acpi, arch/x86/smp/mpspec,soc/amd/common: Move MP_IRQ_ flags into acpi.h

The MP_IRQ flags can be used in the MP table and the ACPI MADT table.
Move them into acpi.h to avoid pulling in the full mpspec.h which is
only available on x86.

BUG=b:218874489, b:160595155
TEST=Build

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I4f1091b7629a6446fa399720b0270556a926401a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63845
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/acpi/acpi.h

@@ -636,6 +636,15 @@ typedef struct acpi_madt_ioapic {
 	u32 gsi_base;			/* Global system interrupt base */
 } __packed acpi_madt_ioapic_t;
 
+#define MP_IRQ_POLARITY_DEFAULT		0x0
+#define MP_IRQ_POLARITY_HIGH		0x1
+#define MP_IRQ_POLARITY_LOW		0x3
+#define MP_IRQ_POLARITY_MASK		0x3
+#define MP_IRQ_TRIGGER_DEFAULT		0x0
+#define MP_IRQ_TRIGGER_EDGE		0x4
+#define MP_IRQ_TRIGGER_LEVEL		0xc
+#define MP_IRQ_TRIGGER_MASK		0xc
+
 /* MADT: Interrupt Source Override Structure */
 typedef struct acpi_madt_irqoverride {
 	u8 type;			/* Type (2) */