drivers: staging: lustre: Use 'force_die' instead of 'die' to avoid compiling issue

Some of architectures have already defined 'die' as macro, so can not
use it as declaration or definition in other modules, or it will cause
compiling issue.

So use more precise name 'force_die' (like 'wrap_bulk') instead of. And
the related error (with allmodconfig under score):

    CC [M]  drivers/staging/lustre/lustre/ptlrpc/sec.o
  drivers/staging/lustre/lustre/ptlrpc/sec.c: In function 'sptlrpc_cli_ctx_expire':
  drivers/staging/lustre/lustre/ptlrpc/sec.c:309:13: error: 'struct ptlrpc_ctx_ops' has no member named '__die'
    ctx->cc_ops->die(ctx, 0);
               ^
  drivers/staging/lustre/lustre/ptlrpc/sec.c: In function 'ctx_refresh_timeout':
  drivers/staging/lustre/lustre/ptlrpc/sec.c:594:26: error: 'struct ptlrpc_ctx_ops' has no member named '__die'
     req->rq_cli_ctx->cc_ops->die(req->rq_cli_ctx, 0);
                            ^
  make[5]: *** [drivers/staging/lustre/lustre/ptlrpc/sec.o] Error 1
  make[4]: *** [drivers/staging/lustre/lustre/ptlrpc] Error 2
  make[3]: *** [drivers/staging/lustre/lustre] Error 2
  make[2]: *** [drivers/staging/lustre] Error 2
  make[1]: *** [drivers/staging] Error 2
  make: *** [drivers] Error 2
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/include/lustre_sec.h

@@ -387,7 +387,7 @@ struct ptlrpc_ctx_ops {
 	/**
 	 * Force the \a ctx to die.
 	 */
-	void    (*die)	 (struct ptlrpc_cli_ctx *ctx,
+	void    (*force_die)   (struct ptlrpc_cli_ctx *ctx,
 				int grace);
 	int     (*display)     (struct ptlrpc_cli_ctx *ctx,
 				char *buf, int bufsize);

drivers/staging/lustre/lustre/ptlrpc/sec.c

@@ -305,8 +305,8 @@ EXPORT_SYMBOL(sptlrpc_cli_ctx_put);
  */
 void sptlrpc_cli_ctx_expire(struct ptlrpc_cli_ctx *ctx)
 {
-	LASSERT(ctx->cc_ops->die);
-	ctx->cc_ops->die(ctx, 0);
+	LASSERT(ctx->cc_ops->force_die);
+	ctx->cc_ops->force_die(ctx, 0);
 }
 EXPORT_SYMBOL(sptlrpc_cli_ctx_expire);
 
@@ -591,7 +591,7 @@ int ctx_refresh_timeout(void *data)
 	 * later than the context refresh expire time.
 	 */
 	if (rc == 0)
-		req->rq_cli_ctx->cc_ops->die(req->rq_cli_ctx, 0);
+		req->rq_cli_ctx->cc_ops->force_die(req->rq_cli_ctx, 0);
 	return rc;
 }