lib/coreboot_table: add architecture hooks for adding tables

Add a architecture specific function, arch_write_tables(), that
allows an architecture to add its required tables for booting.
This callback helps write_tables() to be de-duplicated.

Change-Id: I805c2f166b1e75942ad28b6e7e1982d64d2d5498
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14435
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/lib/coreboot_table.c

@@ -19,6 +19,7 @@
 #include <console/uart.h>
 #include <ip_checksum.h>
 #include <boot/coreboot_tables.h>
+#include <boot/tables.h>
 #include <boot_device.h>
 #include <string.h>
 #include <version.h>
@@ -464,6 +465,8 @@ unsigned long write_coreboot_table(
 {
 	struct lb_header *head;
 
+	arch_write_tables(rom_table_end);
+
 	if (low_table_start || low_table_end) {
 		printk(BIOS_DEBUG, "Writing table forward entry at 0x%08lx\n",
 				low_table_end);