build: Update gen-version.sh to use lightweight tags

By default, only annotated tags are used to generate the version string.
Update the git describe command with --tags to allow use of lightweight
tags as well.

Signed-off-by: Naushir Patuck <[email protected]>

Author: naushir

utils/gen-version.sh

@@ -26,7 +26,7 @@ then
 fi
 
 # Get a short description from the tree.
-version=$(git describe --abbrev=8 --match "v[0-9]*" 2>/dev/null)
+version=$(git describe --tags --abbrev=8 --match "v[0-9]*" 2>/dev/null)
 
 if [ -z "$version" ]
 then