net/i40e: fix TC bandwidth definition
net/i40e: fix TC bandwidth definition

The range of TC bandwidth is 0 ~ 800, it's 16bits not 8bits.

Fixes: c8b9a3e3fe1b ("i40e: support DCB mode")
Cc: stable@dpdk.org

Signed-off-by: Wenzhuo Lu <58cb9036bdff9a5412edc3b9f70e105ccf59954f@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk