Remove now duplicated code from ofwbus.c. Move all useful methods into simplebus.c.
Move resource managers for IRQ and memory from ofwbus to nexus.
Other code uses 0 for invalid phandle, so use it in simplebus_get_devinfo() too.
Rename Exynos UART. No functional change.
Don't use C++ reserved word "class" in uart_cpu_fdt.c. No functional change.
Use linker set for UARTs definition
Move UATRs FDT declarations into appropriate files. Make uart_class structure static where is possible.