ARM: deprecate support for old way to pass kernel parameters

This was deprecated in 2001 and announced to live on for 5 years.

For now provide a kernel parameter for those who still need it.

Acked-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1f254bd..a53ac65 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1374,6 +1374,12 @@
 	  However, if the CPU data cache is using a write-allocate mode,
 	  this option is unlikely to provide any performance gain.
 
+config DEPRECATED_PARAM_STRUCT
+	bool "Provide old way to pass kernel parameters"
+	help
+	  This was deprecated in 2001 and announced to live on for 5 years.
+	  Some old boot loaders still use this way.
+
 endmenu
 
 menu "Boot options"