Revert "kernel-3.4.x: net: improve performance for RX path (inline skb_flow_dissect for most case)"

This reverts commit 90c02bc26ba5c69b17a186c8493063d19f7506f8.
kernel-3.x.x: flow_dissector: clean up IPIP case, add support for IPPROTO_IPV6, commits fca418955148e4f4555d7ce911e9eee3e7970a7f, b438f940d3541f478c6b37106ed095f1be7959ef upstream
kernel-3.x.x: net: flow_dissector: small optimizations in IPv4 dissect, commit 3797d3e8462efdaadb64164ca540626b55fe8336 upstream
kernel-3.x.x: iptables: small reorder optimizations
kernel-3.x.x: cleanup
kernel-3.0.x: oops [64536e1f73a8]
Revert the reverted changes for merge. Problem fixed upstream.
Merge remote-tracking branch 'upstream/master'