virtual_eisa_root_init() should be __init

WARNING: vmlinux - Section mismatch: reference to
.init.text:eisa_root_register from .text between 'virtual_eisa_root_init' (at
offset 0xc026b80f) and 'cpufreq_debug_disable_ratelimit'

Cc: Dave Jones <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/drivers/eisa/virtual_root.c b/drivers/eisa/virtual_root.c
index 9b4fcac..3074879 100644
--- a/drivers/eisa/virtual_root.c
+++ b/drivers/eisa/virtual_root.c
@@ -47,7 +47,7 @@
 	/* nothing really to do here */
 }
 
-static int virtual_eisa_root_init (void)
+static int __init virtual_eisa_root_init (void)
 {
 	int r;