Kirkwood: Add support for Ka-Ro TK71

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Cc: Wolfgang Denk <wd@denx.de>
diff --git a/boards.cfg b/boards.cfg
index d33ff27..a423555 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -158,6 +158,7 @@
 sheevaplug                   arm         arm926ejs   -                   Marvell        kirkwood
 ib62x0                       arm         arm926ejs   ib62x0              raidsonic      kirkwood
 dockstar                     arm         arm926ejs   -                   Seagate        kirkwood
+tk71                         arm         arm926ejs   tk71                karo           kirkwood
 devkit3250                   arm         arm926ejs   devkit3250          timll          lpc32xx
 jadecpu                      arm         arm926ejs   jadecpu             syteco         mb86r0x
 mx25pdk                      arm         arm926ejs   mx25pdk             freescale      mx25		mx25pdk:IMX_CONFIG=board/freescale/mx25pdk/imximage.cfg