ACPICA: MADT: Add RISC-V INTC interrupt controller

ACPICA commit bd6d1ae1e13abe78e149c8b61b4bc7bc7feab015

The ECR to add RISC-V INTC interrupt controller is approved by
the UEFI forum and will be available in the next revision of
the ACPI specification.

Link: acpica/acpica@bd6d1ae1
Signed-off-by: Sunil V L <[email protected]>
Signed-off-by: Bob Moore <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: vlsunil

include/acpi/actbl2.h

@@ -891,7 +891,8 @@ enum acpi_madt_type {
 	ACPI_MADT_TYPE_MSI_PIC = 21,
 	ACPI_MADT_TYPE_BIO_PIC = 22,
 	ACPI_MADT_TYPE_LPC_PIC = 23,
-	ACPI_MADT_TYPE_RESERVED = 24,	/* 24 to 0x7F are reserved */
+	ACPI_MADT_TYPE_RINTC = 24,
+	ACPI_MADT_TYPE_RESERVED = 25,	/* 25 to 0x7F are reserved */
 	ACPI_MADT_TYPE_OEM_RESERVED = 0x80	/* 0x80 to 0xFF are reserved for OEM use */
 };
 
@@ -1251,6 +1252,24 @@ enum acpi_madt_lpc_pic_version {
 	ACPI_MADT_LPC_PIC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
 };
 
+/* 24: RISC-V INTC */
+struct acpi_madt_rintc {
+	struct acpi_subtable_header header;
+	u8 version;
+	u8 reserved;
+	u32 flags;
+	u64 hart_id;
+	u32 uid;		/* ACPI processor UID */
+};
+
+/* Values for RISC-V INTC Version field above */
+
+enum acpi_madt_rintc_version {
+	ACPI_MADT_RINTC_VERSION_NONE = 0,
+	ACPI_MADT_RINTC_VERSION_V1 = 1,
+	ACPI_MADT_RINTC_VERSION_RESERVED = 2	/* 2 and greater are reserved */
+};
+
 /* 80: OEM data */
 
 struct acpi_madt_oem_data {