drivers: intc: intrc_shared: get client count from SUPPORTS_DEP_ORDS

The intc_shared driver used kconfig to set the number of clients.
This commit changes the driver to determine the number of clients
per instance using supports ordinals information from device tree.

Leave the kconfig symbol for the number of clients, it now only defines
the array size in driver data and therefore an upper limit of how
many clients can be defined in dts.
It will be removed later with changes of driver data struct.

Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
1 file changed