set OUTDIR for consistency with config.test

We depend on this being set correctly set in device_config.prf

Change-Id: Iee69c5ce35af26f9ecd6edacdd70e13ae4a9aa90
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>

config.tests/unix/arch.test

@@ -13,7 +13,7 @@ VARPREFIX=$6
 # build a test program but don't run it
 test -d "$OUTDIR/config.tests/arch" || mkdir -p "$OUTDIR/config.tests/arch"
 [ -f Makefile ] && $MAKE distclean >/dev/null 2>&1
-"$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "QT_BUILD_TREE=$OUTDIR" "LIBS+=$SYSROOT_FLAG" "QMAKE_CXXFLAGS+=$SYSROOT_FLAG" "$SRCDIR/config.tests/arch/arch.pro" -o "$OUTDIR/config.tests/arch/Makefile" >/dev/null 2>&1 || echo "qmake is broken" >&2
+OUTDIR=$OUTDIR "$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "QT_BUILD_TREE=$OUTDIR" "LIBS+=$SYSROOT_FLAG" "QMAKE_CXXFLAGS+=$SYSROOT_FLAG" "$SRCDIR/config.tests/arch/arch.pro" -o "$OUTDIR/config.tests/arch/Makefile" >/dev/null 2>&1 || echo "qmake is broken" >&2
 cd "$OUTDIR/config.tests/arch"