net/bnxt: support L2 context TCAM operations

net/bnxt: support L2 context TCAM operations

- Implement TCAM get in host
- Add Thor support for TCAM set/free

Signed-off-by: Jay Ding <jay.ding@broadcom.com>
Signed-off-by: Randy Schacher <stuart.schacher@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Peter Spreadborough <peter.spreadborough@broadcom.com>
Reviewed-by: Farah Smith <farah.smith@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>