linux-4.14.55: Allow to trace nfsd v4 operations

From time to time our nfs file servers are overloaded and it is quite
challenging for the admins to track down the source of the problem.

Add a patch to the kernels nfsd module which enables it to log all nfs4
operations via the kernel event trace utility.

This will give us the oportunity to write simple users-space tools
to track down nfs load.

Also rebuild nvidia_linux-4.14.55 for the new kernel.

Patch Description:
==================

Add trace events to all v4 operations. Record client ip for ipv4
clients. Record uid from request credentials.

For READ and WRITE ops, additionally record offset and length request
arguments and device,inode and fileanme of the affected file.