update/project/*: unified patch handling

Handle patches by a function at include/git.sh

Signed-off-by: Leah Rowe <leah@libreboot.org>

script/update/project/repo

@@ -5,13 +5,14 @@
 # SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
 
 . "include/err.sh"
+. "include/git.sh"
 
 name=""
 revision=""
 location=""
 url=""
 bkup_url=""
-tmp_dir="tmp/gitclone"
+tmp_dir="${PWD}/tmp/gitclone"
 depend=""
 
 main()
@@ -83,7 +84,8 @@ clone_project()
 	git reset --hard ${revision} || \
 	    fail "clone_project: Cannot reset revision"
 	)
-	patch_project
+	git_am_patches "${tmp_dir}" "${PWD}/config/${name}/patches" "fail" || \
+	    fail "clone_project ${location}/: cannot apply patches"
 
 	[ ! -d "${location}" ] || \
 		rm -Rf "${location}" || \
@@ -94,20 +96,6 @@ clone_project()
 	    fail "clone_project: could not copy temp file to destination"
 }
 
-patch_project()
-{
-	patchdir="config/${name}/patches"
-
-	for patchfile in "${PWD}/${patchdir}"/*.patch ; do
-		[ -f "${patchfile}" ] || continue
-		(
-		cd "${tmp_dir}" || fail "patch_project: tmpdir unavailable"
-		git am "${patchfile}" || \
-		    fail "patch_project: Cannot patch project: $name"
-		)
-	done
-}
-
 fail()
 {
 	for x in "${location}" "${tmp_dir}"; do