amdfwtool: Take a config file instead of command line parameters

To verify the consistency, see if timeless builds with and without
this patch result in identical coreboot.rom files.

BUG=b:154032833
TEST=Build & boot on mandolin

Change-Id: Icae73d0730106aab687486e555ba947796e5e757
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42859
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nikolai Vyssotski <nikolai.vyssotski@amd.corp-partner.google.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

util/amdfwtool/Makefile.inc

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: BSD-3-Clause
 
-amdfwtoolobj = amdfwtool.o
+amdfwtoolobj = amdfwtool.o data_parse.o
 
 AMDFWTOOLCFLAGS=-O2 -Wall -Wextra -Wshadow