mapi: automake: include builddir prior to srcdir

Analogous to previous commit.

Cc: "12.0 13.0" <mesa-dev@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
(cherry picked from commit ee5de93269cee8abec2dd4d938c5e745983bf98e)
diff --git a/src/mapi/Makefile.am b/src/mapi/Makefile.am
index 5013e9a..7ebe14f 100644
--- a/src/mapi/Makefile.am
+++ b/src/mapi/Makefile.am
@@ -46,8 +46,8 @@
 	$(SELINUX_CFLAGS)					\
 	-I$(top_srcdir)/include					\
 	-I$(top_srcdir)/src					\
-	-I$(top_srcdir)/src/mapi				\
-	-I$(top_builddir)/src/mapi
+	-I$(top_builddir)/src/mapi				\
+	-I$(top_srcdir)/src/mapi
 
 include Makefile.sources