ivi-shell/weston.ini: fix paths

If you do an out-of-tree build, all the images will be left in the
srcdir. Fix their paths.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
diff --git a/Makefile.am b/Makefile.am
index 2aac21a..42d616b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -23,6 +23,7 @@
 	$(AM_V_GEN)$(SED) \
 		-e 's|@bindir[@]|$(bindir)|g' \
 		-e 's|@abs_top_builddir[@]|$(abs_top_builddir)|g' \
+		-e 's|@abs_top_srcdir[@]|$(abs_top_srcdir)|g' \
 		-e 's|@libexecdir[@]|$(libexecdir)|g' \
 		-e 's|@plugin_prefix[@]||g' \
 		$< > $@
@@ -31,6 +32,7 @@
 	$(AM_V_GEN)$(SED) \
 		-e 's|@bindir[@]|$(bindir)|g' \
 		-e 's|@abs_top_builddir[@]|$(abs_top_builddir)|g' \
+		-e 's|@abs_top_srcdir[@]|$(abs_top_srcdir)|g' \
 		-e 's|@libexecdir[@]|$(libexecdir)|g' \
 		-e 's|@plugin_prefix[@]|$(abs_top_builddir)/.libs/|g' \
 		$< > $@