Add GIT version information (commid ID) to untagged U-Boot versions

As done in the linux kernel, the U-Boot version (U_BOOT_VERSION)
of all unreleased (untagged) U-Boot images will be automatically
extended upon compiletime with a part of the GIT commit ID and
possibly with "dirty" if uncommited changes are detected.

Here an example for the resulting version:
"U-Boot 1.1.4-g3457ac18-dirty"

The version is now maintained in the toplevel Makefile and the
version headers are autogenerated.

Patch by Stefan Roese, 9 Feb 2006
diff --git a/CHANGELOG b/CHANGELOG
index 394cb14..44989b8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,21 @@
 Changes since U-Boot 1.1.4:
 ======================================================================
 
+* Add GIT version information (commid ID) to untagged U-Boot versions
+
+  As done in the linux kernel, the U-Boot version (U_BOOT_VERSION)
+  of all unreleased (untagged) U-Boot images will be automatically
+  extended upon compiletime with a part of the GIT commit ID and
+  possibly with "dirty" if uncommited changes are detected.
+
+  Here an example for the resulting version:
+  "U-Boot 1.1.4-g3457ac18-dirty"
+
+  The version is now maintained in the toplevel Makefile and the
+  version headers are autogenerated.
+
+  Patch by Stefan Roese, 9 Feb 2006
+
 * Update default environment for INKA4x00 board.
 
 * Convert CPCI750 to use common CFI flash driver