ACPI: ARM64: add acpi_iort.h to MAINTAINERS

IORT(Input Output Remapping Table) represents the I/O topology of an
Arm-based system for use with the ACPI, so acpi_iort.h is for arm64
only.

This helps git-send-email to figure out the proper maintainers when
touching the file.

Signed-off-by: Hanjun Guo <[email protected]>
Acked-by: Sudeep Holla <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

Author: guohanjun

MAINTAINERS

@@ -334,6 +334,7 @@ L:	[email protected]
 L:	[email protected] (moderated for non-subscribers)
 S:	Maintained
 F:	drivers/acpi/arm64
+F:	include/linux/acpi_iort.h
 
 ACPI FOR RISC-V (ACPI/riscv)
 M:	Sunil V L <[email protected]>