Remove deprecated plat_crash_console_*

The default implementations are defined in crash_console_helpers.S. The
platforms have to define plat_crash_console_*.

Implemented placeholders for platforms that were missing helpers.

Change-Id: Iea60b6f851956916e421dfd8c34a62d96eb9148e
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
diff --git a/plat/xilinx/versal/platform.mk b/plat/xilinx/versal/platform.mk
index 78e9b33..1532d92 100644
--- a/plat/xilinx/versal/platform.mk
+++ b/plat/xilinx/versal/platform.mk
@@ -1,4 +1,4 @@
-# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 
@@ -48,6 +48,7 @@
 				drivers/arm/gic/v3/gicv3_main.c			\
 				drivers/arm/gic/v3/gicv3_helpers.c		\
 				drivers/arm/pl011/aarch64/pl011_console.S	\
+				plat/common/aarch64/crash_console_helpers.S	\
 				plat/common/plat_gicv3.c			\
 				plat/xilinx/versal/aarch64/versal_helpers.S	\
 				plat/xilinx/versal/aarch64/versal_common.c