util/amdfwtool: Add support for PSP NVRAM base addr and size

Add parameters to support adding the location and size of
the PSP NVRAM area to the PSP directory table.

Verified this change on PCO based Bilby platform.
Change-Id: I1664893db6f6dcdc588aeaf9448c2d81390af5fa
Signed-off-by: Ritul Guru <ritul.bits@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67137
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/amdfwtool/amdfwtool.h

@@ -276,6 +276,8 @@ typedef struct _amd_fw_entry {
 	amd_fw_type type;
 	char *filename;
 	uint8_t subprog;
+	uint64_t dest;
+	size_t size;
 	int level;
 	uint64_t other;
 } amd_fw_entry;