perfcounters: select ANON_INODES

The perfcounters subsystem depends on CONFIG_ANON_INODES facilities,
so make sure it's selected.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/init/Kconfig b/init/Kconfig
index 78bede2..7d147a3 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -741,6 +741,7 @@
 	bool "Kernel Performance Counters"
 	depends on HAVE_PERF_COUNTERS
 	default y
+	select ANON_INODES
 	help
 	  Enable kernel support for performance counter hardware.