build: Move test build flags in Makefile.in

Move test build flags in Makefile.in
Makefile should be used only as a container for other sub Makefiles

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

test/pthread/Makefile

@@ -1,7 +1,6 @@
 # uClibc pthread tests
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 
-TESTS_DISABLED += cancellation-points
 top_builddir=../../
 include ../Rules.mak
 -include Makefile.in

test/pthread/Makefile.in

@@ -1,6 +1,7 @@
 # uClibc pthread tests
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 
+TESTS_DISABLED += cancellation-points
 
 EXTRA_LDFLAGS := -lpthread