net: microchip: sparx5: Add VCAP debugfs KUNIT test

This tests the functionality of the debugFS support:

- finding valid keyset on an address
- raw VCAP output
- full rule VCAP output

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: microchip: sparx5: Adding KUNIT test for the VCAP API

This provides a KUNIT test suite for the VCAP APIs encoding functionality.

The test can be run by adding these settings in a .kunitconfig file

CONFIG_KUNIT=y
CONFIG_NET=y
CONFIG_VCAP_KUNIT_TEST=y

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: microchip: sparx5: Adding initial VCAP API support

This provides the initial VCAP API framework and Sparx5 specific VCAP
implementation.

When the Sparx5 Switchdev driver is initialized it will also initialize its
VCAP module, and this hooks up the concrete Sparx5 VCAP model to the VCAP
API, so that the VCAP API knows what VCAP instances are available.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>