[samples] Add a linux -> mingw32 -> i686-linux canadian sample

Add a sample that builds on Linux a mingw32-hosted toolchain that
generates code for i686-none-linux-gnu.

Signed-off-by: Bart van der Meulen <bartvdrmeulen@gmail.com>

# x86 specific options

config ARCH_x86

    select ARCH_USE_MMU

    select ARCH_SUPPORT_ARCH

    select ARCH_SUPPORT_CPU

    select ARCH_SUPPORT_TUNE

    help

      The x86 architecture, as defined by:

        http://www.intel.com/