This patch adds definition of macro XPAR_XAXIS_SWITCH_NUM_INSTANCES, controls
config table parameters with macro XPAR_XAXIS_SWITCH_NUM_INSTANCES.
These changes are to avoid compilation errors in Subsystem driver if
Subsystem HIP is not included axis_switch as subcore, results axis_switch
driver not in BSP.
Signed-off-by: Shadul Shaikh <shaduls@xilinx.com>
Acked-by: Srikanth Vemula <svemula@xilinx.com>