board/freescale/imx6ul(l)evk: fix repetition of "to" string

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit fb894b2e98e944e517cb74278df555fa4147d3b3)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

board/freescale/imx6ulevk/readme.txt

@@ -12,7 +12,7 @@ Build
 
 First, configure Buildroot for your i.MX6UL EVK board:
 
-In order to to do so there are two supported options:
+In order to do so there are two supported options:
 
   make freescale_imx6ulevk_defconfig
 

board/freescale/imx6ullevk/readme.txt

@@ -9,7 +9,7 @@ Build
 
 First, configure Buildroot for your i.MX6ULL EVK board:
 
-In order to to do so there are two supported options:
+In order to do so there are two supported options:
 
   make freescale_imx6ullevk_defconfig