doc: add missing ulink v1 to supported interfaces

Change-Id: Ic497a3f9076ec1799ca715a99bc2e634bd1af40d
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/761
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>

doc/openocd.texi

@@ -467,6 +467,9 @@ The simplest solution is to get linux to ignore the ST-LINK using one of the fol
 
 @item @b{estick}
 @* Link: @url{http://code.google.com/p/estick-jtag/}
+
+@item @b{Keil ULINK v1}
+@* Link: @url{http://www.keil.com/ulink1/}
 @end itemize
 
 @section IBM PC Parallel Printer Port Based
@@ -2818,6 +2821,10 @@ Manually sets the stlink api used, valid options are 1 or 2.
 opendous-jtag is a freely programmable USB adapter.
 @end deffn
 
+@deffn {Interface Driver} {ulink}
+This is the Keil ULINK v1 JTAG debugger.
+@end deffn
+
 @deffn {Interface Driver} {ZY1000}
 This is the Zylin ZY1000 JTAG debugger.
 @end deffn