document TTi

Reference: /n/atom/patch/applied/ttiman
Date: Sat Mar 22 20:18:53 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/man/3/cons	Sat Mar 22 20:18:48 2014
+++ /sys/man/3/cons	Sat Mar 22 20:18:49 2014
@@ -385,6 +385,8 @@
 prints the kernel stack.
 .L ^T^Tx
 prints data about kernel memory allocation.
+.L ^T^Ti
+prints data about interrupts.
 .PP
 The system can be rebooted by typing
 .LR ^T^Tr .