UBUNTU: [Config] Update for the ESWIN EIC7700

The ESWIN EIC7700 SoC has non-coherent peripheral DMAs and handles it in
a non-standard way, so unfortunately this kernel cannot be built to
support multiple SoCs.
Hence we disable support for other platforms and enable drivers for the
EIC7700.

Signed-off-by: Emil Renner Berthing <[email protected]>