The MPC852 based mgsuvd board from Keymile was initially ported,
but later on not developed further. This patch removes the respective
files to decrease merging conflicts and unneeded maintenance.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Acked-by: Heiko <Schocher&lt;hs@denx.de>
Cc: Vitaly Bordug <vitb@kernel.crashing.org>
Cc: Marcelo Tosatti <marcelo@kvack.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>