avr32: export strnlen_user
avr32: export strnlen_user

This patch fixes the following build error:

<--  snip  -->

...
  MODPOST 1327 modules
ERROR: "strnlen_user" [drivers/input/misc/uinput.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->

Reported-by: Adrian Bunk <0b86548ef377da0031a3ff3f0c4e06f016e20105@kernel.org>
Signed-off-by: Adrian Bunk <0b86548ef377da0031a3ff3f0c4e06f016e20105@kernel.org>
Signed-off-by: Haavard Skinnemoen <af8c0cf3411930951fa86926b241df32af99fdb9@atmel.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs