Replace ARM bootloader patch with pending upstream version. The patch
got reviewed upstream and tested on a Netgear R7800.
This fix a problem with the ARM decompressor and permits to use
AUTO_ZRELADDR without having to hardcode PHYS_OFFSET as the bootloader
now correctly parse the memory modes in the appended DTB.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>