Obsolete Cell Broadband Engine SPU target support

gcc/ChangeLog:
2019-04-02  Ulrich Weigand  <uweigand@de.ibm.com>

        * config.gcc: Mark spu* targets as deprecated/obsolete.

From-SVN: r270092

gcc/ChangeLog

+2019-04-02  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* config.gcc: Mark spu* targets as deprecated/obsolete.
+
 2019-04-02  Andreas Krebbel  <krebbel@linux.ibm.com>
 
 	* config/s390/s390-builtin-types.def: New builtin function type

gcc/config.gcc

@@ -248,6 +248,7 @@ md_file=
 # Obsolete configurations.
 case ${target} in
   *-*-solaris2.10*			\
+  | spu*-*-*				\
   | tile*-*-*				\
  )
     if test "x$enable_obsolete" != xyes; then