x86: Add binary blob checksums for Minnowboard MAX

To try to reduce the pain of confusion of binary blobs, add MD5 checksums
for the current versions. This may worsen the situation as new versions
appear, but it should still be possible to obtain these versions, and thus
get a working setup.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

doc/README.x86

@@ -164,6 +164,14 @@ Now you can build U-Boot and obtain u-boot.rom
 $ make minnowmax_defconfig
 $ make all
 
+Checksums are as follows (but note that newer versions will invalidate this):
+
+$ md5sum -b board/intel/minnowmax/*.bin
+ffda9a3b94df5b74323afb328d51e6b4  board/intel/minnowmax/descriptor.bin
+69f65b9a580246291d20d08cbef9d7c5  board/intel/minnowmax/fsp.bin
+894a97d371544ec21de9c3e8e1716c4b  board/intel/minnowmax/me.bin
+a2588537da387da592a27219d56e9962  board/intel/minnowmax/vga.bin
+
 The ROM image is broken up into these parts:
 
 Offset   Description         Controlling config