autotools: Fix tags/cscope targets with autools

This was introduced with a95bb6f7e5 (clients: Support explicit
synchronization)

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>

Makefile.am

@@ -703,7 +703,7 @@ nodist_weston_simple_dmabuf_egl_SOURCES =		\
 	protocol/linux-dmabuf-unstable-v1-protocol.c \
 	protocol/linux-dmabuf-unstable-v1-client-protocol.h	\
 	protocol/linux-explicit-synchronization-unstable-v1-protocol.c	\
-	protocol/linux-explicit-synchronization-v1-client-protocol.h
+	protocol/linux-explicit-synchronization-unstable-v1-client-protocol.h
 weston_simple_dmabuf_egl_CFLAGS = $(AM_CFLAGS) $(SIMPLE_DMABUF_EGL_CLIENT_CFLAGS)
 weston_simple_dmabuf_egl_LDADD = $(SIMPLE_DMABUF_EGL_CLIENT_LIBS) libshared.la -lm
 endif