zynq: dts: Remove license from generated files

Remove license from DTS.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
zynq: dts: Fix pl330 node

pl330 requires clock-name setup as apg_pclk.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
zynq: dts: Extend sdhci compatible string

The driver will start to use new compatible string soon
that's why prepare our DTSes for this change.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
zynq: dts: Add register and interrupt name description

They are optional parameters which better identify
what regs/irqs entry mean.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>