sept: Add support for loading sept from fss0

If `fss0=` key is detected, sept will be loaded from fusee-secondary.bin instead of `sept/sept_*`.

This will negate missing sept and failed to decrypt pkg2 errors, when booting HOS, for users that forget to update sept folder.

bootloader/frontend/fe_tools.c

@@ -109,7 +109,7 @@ void dump_packages12()
 			gfx_printf("sept will run to get the keys.\nThen rerun this option.");
 			btn_wait();
 
-			if (!reboot_to_sept((u8 *)tsec_ctxt.fw, kb))
+			if (!reboot_to_sept((u8 *)tsec_ctxt.fw, kb, NULL))
 			{
 				gfx_printf("Failed to run sept\n");
 				goto out_free;