internal/iana: update protocol numbers
internal/iana: update protocol numbers

Change-Id: I643468dde9f2b3c8719795e92df821f821070ab4
Reviewed-on: https://go-review.googlesource.com/12628
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

zabawaba99/net,flowlo/go-net,golang/net,albertjin/golang-net,cesanta/goxnet,muzining/net,w4ngyi/net,mckinney-subgraph/net,cmars/tools,cesanta/goxnet,albertjin/golang-net,raboof/net,cmars/tools,flowlo/go-net,mckinney-subgraph/net,DramaFever/golang.org-x-net,dafyddcrosby/net,gomini/net,kiip/net,dafyddcrosby/net,veliamsli/net,gomini/net,cmars/tools,cmars/tools,DramaFever/golang.org-x-net,raboof/net,veliamsli/net,zabawaba99/net,w4ngyi/net,muzining/net,kiip/net