Doc: correct the location of sysrq.c

sysrq.c moved to drivers/tty in 2010; update the documentation to match.

Signed-off-by: René Nyffenegger <mail@renenyffenegger.ch>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/sysrq.txt b/Documentation/sysrq.txt
index 13f5619..3a3b30a 100644
--- a/Documentation/sysrq.txt
+++ b/Documentation/sysrq.txt
@@ -212,7 +212,7 @@
 overwritten since you registered it.
 
 The Magic SysRQ system works by registering key operations against a key op
-lookup table, which is defined in 'drivers/char/sysrq.c'. This key table has
+lookup table, which is defined in 'drivers/tty/sysrq.c'. This key table has
 a number of operations registered into it at compile time, but is mutable,
 and 2 functions are exported for interface to it:
 	register_sysrq_key and unregister_sysrq_key.