net/bnxt: cleanup WC TCAM shared pool

net/bnxt: cleanup WC TCAM shared pool

Clean up all allocated hi or lo pool TCAM regions on close.
Along with message cleanup and remove unnecessary multi-slice options
Also make sure that find next free entry should start from 0 first time.

Signed-off-by: Farah Smith <farah.smith@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>