WIP: New kernel using new 14.4 ADI HDMI driver.

Requires new programmable logic (FPGA) bitfile to function.
Reset the (zedboard) device tree to the kernel default

Kernel crashes with the previous tree.
zedboard/devicetree: Add flash partitions

GPIO led/buttons caused the crash, flash partitions are useful.
Use 14.4 logic and kernel drivers.

Does not work on zc702 (yet?), works fine on zedboard.
Add heartbeat LED back to zedboard devicetree

The LED doesn't appear to hurt. The gpio-keys driver will crash, so leave that out.
devicetree: Default to booting from internal flash again, add oled

Put back the ubifs bootargs for the kernel, so that the board
can boot without SD or other external storage.

Add the OLED configuration to the zedboard tree (needs PL to work)
Update linux to include 1920x1080 default resolution patch