[PATCH] Documentation: changes.rst: add entry for git

[Rasmus Villemoes]

git is obviously used for development, directly and also
indirectly (via checkpatch, get_maintainer and other helper
scripts). But it is also invoked during the build to produce the
`uname -r` string.

It's useful to have some minimal git version one can expect people to
use. For now, set a somewhat conservative minimum of 1.8.0, which is
already more then ten years old.

Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
---
 Documentation/process/changes.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
index 5561dae94f85..a82c619f4bb2 100644
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@@ -62,6 +62,7 @@ Sphinx\ [#f1]_         1.7              sphinx-build --version
 cpio                   any              cpio --version
 GNU tar                1.28             tar --version
 gtags (optional)       6.6.5            gtags --version
+git                    1.8.0            git --version
 ====================== ===============  ========================================
 
 .. [#f1] Sphinx is needed only to build the Kernel documentation
@@ -189,6 +190,13 @@ The kernel build requires GNU GLOBAL version 6.6.5 or later to generate
 tag files through ``make gtags``.  This is due to its use of the gtags
 ``-C (--directory)`` flag.
 
+git
+---
+
+When building with CONFIG_LOCALVERSION_AUTO=y, the build system uses
+git to produce a version string of the form
+6.4.6-00128-gd78b7f406397, which will be shown e.g. by running `uname -r`.
+
 System utilities
 ****************
 
-- 
2.37.2