oprofile: remove EXPERIMENTAL from the config option description

OProfile is already used for a long time and no longer experimental.

Signed-off-by: Robert Richter <robert.richter@amd.com>
diff --git a/init/Kconfig b/init/Kconfig
index d95ca7c..b7c5839 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1112,7 +1112,7 @@
 	  See Documentation/nommu-mmap.txt for more information.
 
 config PROFILING
-	bool "Profiling support (EXPERIMENTAL)"
+	bool "Profiling support"
 	help
 	  Say Y here to enable the extended profiling support mechanisms used
 	  by profilers such as OProfile.