ACPI: add NFIT and HMAT to the initrd override list

These tables, NFIT and HMAT, are essential for describing
next-generation platform memory topologies and performance
characteristics. Allow them to be overridden for debug and test and
purposes.

Signed-off-by: Dan Williams <[e-mail]>
Reviewed-by: Ross Zwisler <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/tables.c

···
 	ACPI_SIG_UEFI, ACPI_SIG_WAET, ACPI_SIG_WDAT, ACPI_SIG_WDDT,
 	ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT, ACPI_SIG_PSDT,
 	ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, ACPI_SIG_IORT,
-	NULL };
+	ACPI_SIG_NFIT, ACPI_SIG_HMAT, NULL };
 
 #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)