linux-boundary (3.10.17): Add depends on bc-native

This fixes following error:

,----
|  /bin/sh: 1: bc: not found
|  make[1]: *** [kernel/timeconst.h] Error 127
|  make: *** [kernel] Error 2
|  make: *** Waiting for unfinished jobs....
|    CC      drivers/mxc/ipu3/ipu_ic.o
`----

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>