lib/nhlt: add support for setting the oem_revision

In the ACPI header there's an OEM revision field that was previously
just being implicitly set to 0. Allow for a board to provide a
non-zero value for this field.

Change-Id: Icd40c1c162c2645b3990a6f3361c592706251f82
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17650
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/mainboard/intel/kunimitsu/mainboard.c b/src/mainboard/intel/kunimitsu/mainboard.c
index 9f79db6..cbadc2e 100644
--- a/src/mainboard/intel/kunimitsu/mainboard.c
+++ b/src/mainboard/intel/kunimitsu/mainboard.c
@@ -84,7 +84,7 @@
 			printk(BIOS_ERR, "Couldn't add headset codec.\n");
 
 		end_addr = nhlt_soc_serialize_oem_overrides(nhlt, start_addr,
-						 oem_id, oem_table_id);
+						 oem_id, oem_table_id, 0);
 
 		if (end_addr != start_addr)
 			acpi_add_table(rsdp, (void *)start_addr);