opal_config_asm.m4: enable inline assembly on little endian POWER

Suggested by Paul Hargrove,
http://www.open-mpi.org/community/lists/devel/2015/04/17323.php,
amended by Nysal Jan for 32 bit, too.

config/opal_config_asm.m4

@@ -9,7 +9,7 @@ dnl Copyright (c) 2004-2006 High Performance Computing Center Stuttgart,
 dnl                         University of Stuttgart.  All rights reserved.
 dnl Copyright (c) 2004-2005 The Regents of the University of California.
 dnl                         All rights reserved.
-dnl Copyright (c) 2008-2014 Cisco Systems, Inc.  All rights reserved.
+dnl Copyright (c) 2008-2015 Cisco Systems, Inc.  All rights reserved.
 dnl Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
 dnl Copyright (c) 2015      Research Organization for Information Science
 dnl                         and Technology (RIST). All rights reserved.
@@ -988,7 +988,7 @@ AC_DEFUN([OPAL_CONFIG_ASM],[
             OPAL_GCC_INLINE_ASSIGN='"or %0,[$]0,[$]0" : "=&r"(ret)'
             ;;
 
-        powerpc-*|powerpc64-*|rs6000-*|ppc-*)
+        powerpc-*|powerpc64-*|powerpcle-*|powerpc64le-*|rs6000-*|ppc-*)
             OPAL_CHECK_POWERPC_REG
             if test "$ac_cv_sizeof_long" = "4" ; then
                 opal_cv_asm_arch="POWERPC32"