eu3000: Add new fex file for eu3000 a20 top set box

Reported-by: jonsmirl@gmail.com <jonsmirl@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
eu3000: some small fixes

1) Update dram para to match a10-meminfo-static output
2) Change disp_mode to 0, as disp_mode 4 is not supported by linux-sunxi kernel

Signed-off-by: Hans de Goede <hdegoede@redhat.com>