The zynq platform will never have board files other than the
device tree one, so there is no point splitting it from common.c.

This makes the code more compact.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NJohn Linn <john.linn@xilinx.com>

The 1st board support is minimal to get a system up and running
on the Xilinx platform.

This platform reuses the clock implementation from plat-versatile, and
it depends entirely on CONFIG_OF support.  There is only one board
support file which obtains all device information from a device tree
dtb file which is passed to the kernel at boot time.
Signed-off-by: NJohn Linn <john.linn@xilinx.com>