plat: uncompress: enable UART3 output on latona board

Signed-off-by: David Rodero <david@codiguiel.net>
arm: mach-types: fix latona mach type.

Signed-off-by: David Rodero <david@codiguiel.net>
mach: omap2: add latona mux.

Signed-off-by: David Rodero <david@codiguiel.net>