mm: remove depends on CONFIG_EXPERIMENTAL

The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

CC: Andrew Morton <akpm@linux-foundation.org>
CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
CC: Jan Beulich <JBeulich@novell.com>
CC: Mel Gorman <mel@csn.ul.ie>
CC: Seth Jennings <sjenning@linux.vnet.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/mm/Kconfig b/mm/Kconfig
index 278e3ab..308fdca 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -1,6 +1,6 @@
 config SELECT_MEMORY_MODEL
 	def_bool y
-	depends on EXPERIMENTAL || ARCH_SELECT_MEMORY_MODEL
+	depends on ARCH_SELECT_MEMORY_MODEL
 
 choice
 	prompt "Memory model"