util/amdfwtool: Fix MAX_PSP_ENTRIES value

Had to increase MAX_PSP_ENTRIES to accommodate the 16 APCBs we have
the ability to add.

BUG=b:150862063
TEST=Boot Trembyle
BRANCH=None

Signed-off-by: Rob Barnes <robbarnes@google.com>
Change-Id: I64eccfa28839768788f53327caf187a564842162
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2090323
Reviewed-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41580
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/amdfwtool/amdfwtool.c

@@ -479,7 +479,7 @@ typedef struct _bios_directory_table {
 	bios_directory_entry entries[];
 } bios_directory_table;
 
-#define MAX_BIOS_ENTRIES 0x22
+#define MAX_BIOS_ENTRIES 0x2e
 
 typedef struct _context {
 	char *rom;		/* target buffer, size of flash device */