Allwinner update needed for installation-guide

[Martin Michlmayr <tbm@cyrius.com>]

installation-guide's hardware/supported/arm.xml says:

   Using a local display is technically possible without native
   display drivers via the <quote>simplefb</quote> infrastructure
   in the mainline kernel, which relies on the
   <quote>U-Boot</quote> bootloader for initialising the display
   hardware, but this is not supported by the U-Boot version in
   &debian; 8.

Is this still true in stretch?  Karsten, can you update the manual?

-- 
Martin Michlmayr
http://www.cyrius.com/