kernel: make get_config_version quiet

`get_config_version` should not log anything because it's used
by functions that print a string as return value, hence its return value
can be tainted, i.e `get_config_version`.

fixes #867

Signed-off-by: Julio Montes <julio.montes@intel.com>

kernel/build-kernel.sh

@@ -269,15 +269,14 @@ get_default_kernel_config() {
 
 get_config_and_patches() {
 	if [ -z "${patches_path}" ]; then
-		info "Clone config and patches"
 		patches_path="${default_patches_dir}"
 		if [ ! -d "${patches_path}" ]; then
 			tag="${kata_version}"
-			git clone "https://${patches_repo}.git" "${patches_repo_dir}"
+			git clone -q "https://${patches_repo}.git" "${patches_repo_dir}"
 			pushd "${patches_repo_dir}" >> /dev/null
 			if [ -n $tag ] ; then
 				info "checking out $tag"
-				git checkout $tag
+				git checkout -q $tag
 			fi
 			popd >> /dev/null
 		fi

kernel/kata_config_version

@@ -1 +1 @@
-59
+60