net/bnxt: fix Thor SVIF size for generic tables

net/bnxt: fix Thor SVIF size for generic tables

The size of the svif in the generic tables was incorrectly set to the
Wh+ size of 8 bits.  This resulted in incorrect l2 context entries being
associated with a flow once the svif became greater than 255.

Fixes: ad9eed0248ad ("net/bnxt: support flow template for Thor")
Signed-off-by: Mike Baucom <michael.baucom@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>