rtems/bsps: Add machine flags to the linker flags.

- Some packages link executables and this needs valid
  machine flags or you can get errors mixing libraries.

rtems/config/rtems-bsp.cfg

@@ -204,6 +204,12 @@
  %define rtems_bsp_libs %{rtems_bsp_libs} -lrtemsdefaultconfig
 %endif
 
+#
+# The linker flags need to include the machine options for the BSP.
+#
+%define mflags_filter  awk '{for (i=1;i<NF;++i) if ($i ~ /\-m/) printf("%s ",$i);}'
+%define rtems_bsp_ldflags %{rtems_bsp_ldflags} $(echo "%{rtems_bsp_cflags}" | %{mflags_filter})
+
 #
 # Map to names used for cross compiling.
 #