Bridge CoS update - 7

Added optimizations for #port #level #priority #code #point ( #PCP ) #decoding configuration on provider bridges. This will reduce the memory requirement for supporting PCP decoding configuration. The configuration will decide the effective #CoS and #drop #eligibility ( #DEI ) of the incoming frame based on ingress CoS. Based on the priority code point row selected in the PCP table on the port, the CoS and DEI decoded on the frames will change. By default, for a frame the ingress CoS is used unaltered.

#Ethernet update 77 ...
[commit 1232c133519a37001035c506fb9f9984f9b86234]