Update fit_expected_diff.

May break with device-tree-compiler in buster.

tests/data/fit_expected_diff

-@@ -5,13 +5,13 @@
+@@ -5,15 +5,15 @@
    Created:      Fri Jan  1 00:00:00 2021
    Type:         RAMDisk Image
    Compression:  uncompressed
@@ -8,6 +8,9 @@
    Load Address: 0x00000000
 -  Entry Point:  0x00001000
 +  Entry Point:  0x00002000
+   Hash algo:    crc32
+-  Hash value:   347161a5
++  Hash value:   c63c4a06
   Default Configuration: 'conf-1'
   Configuration 0 (conf-1)
    Description:  unavailable