arm64: dts: zynqmp: Add description for zcu104 revC

Xilinx ZynqMP zcu104 revC and newer board revisions have different i2c
structure compare to revA. The rest of the board is the same from software
perspective.
Also enable DMAs and QSPI.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/17f68c235ea1ce96c3293ca0cf3178951d6663f7.1611224800.git.michal.simek@xilinx.com