ipq806x: overhaul AVM FRITZ!box 4040 device-tree file

ipq806x: overhaul AVM FRITZ!box 4040 device-tree file

This patch aligns the device-tree file with the latest
guidelines.
 - No longer include qcom-ipq4019-ap.dk01.1.dtsi. This
   file is only partially upstream and therefore subjected
   to changes that might not be compatible with the board.

   As a result, the definitions from the file have been
   copied into this dts.

 - exclusively use decimal GPIO addresses.

 - reorganize the reserved-memory layout to waste less
   memory. There's no point in keeping the u-boot loader
   around. This should also make it possible    to create
   an image that will boot with the original EVA/ADAM2 loader
   without needing to install the modified u-boot loader.
   And finally mark the "tz-apps" as reusable.
   There isn't a way to  upload apps to the trust-zone in OpenWrt
   yet. But it might see some use in the future as a "secure"
   key-store/TPM.

 - sort the first-level nodes alphabetically.
 - sort nodes with an address by the address.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>