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>

arch/Kconfig

@@ -3,7 +3,7 @@
 #
 
 config OPROFILE
-	tristate "OProfile system profiling (EXPERIMENTAL)"
+	tristate "OProfile system profiling"
 	depends on PROFILING
 	depends on HAVE_OPROFILE
 	select RING_BUFFER

init/Kconfig

@@ -1112,7 +1112,7 @@ config MMAP_ALLOW_UNINITIALIZED
 	  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.