make "git patch-id" a built-in

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git.c b/git.c
index cf7dd5d..b60999c 100644
--- a/git.c
+++ b/git.c
@@ -341,6 +341,7 @@
 		{ "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
 		{ "name-rev", cmd_name_rev, RUN_SETUP },
 		{ "pack-objects", cmd_pack_objects, RUN_SETUP },
+		{ "patch-id", cmd_patch_id },
 		{ "peek-remote", cmd_ls_remote },
 		{ "pickaxe", cmd_blame, RUN_SETUP },
 		{ "prune", cmd_prune, RUN_SETUP },