Import iMX53 M53Menlo device tree from Linux next-20190607 3f310e51ceb1 .
Enable DT control in full U-Boot . Add U-Boot extras into separate DTSi,
the GPIO controllers need to be inited early, otherwise m53_set_clock()
won't be able to detect the correct CPU clock frequency by reading the
GPIO.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
