Add the interrupt flag used in ACPI GTDT table as define.

Signed-off-by: Patrick Rudolph <patrick.rudo...@9elements.com>
Reviewed-by: Simon Glass <s...@chromium.org>
Cc: Simon Glass <s...@chromium.org>
---
 include/acpi/acpi_table.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h
index a1bdab7305..c6a3e44a95 100644
--- a/include/acpi/acpi_table.h
+++ b/include/acpi/acpi_table.h
@@ -707,6 +707,8 @@ struct acpi_gtdt {
        u32 virt_el2_flags;
 } __packed;
 
+#define GTDT_FLAG_INT_ACTIVE_LOW       BIT(1)
+
 /**
  * struct acpi_bgrt -  Boot Graphics Resource Table (BGRT)
  *
-- 
2.46.2

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