Add num_cpus and num_interrupts for GIC

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Suggested-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
trivial: Use the same coding style

BSP translate _ to - automatically.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwiate@xilinx.com>
Generate ps7-can compatible property

Driver is using only ps7-can without version.
Fix BSP to generate it too.

-compatible = "xlnx,ps7-can-1.00.a";
+compatible = "xlnx,ps7-can-1.00.a", "xlnx,ps7-can";

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>