net: qrtr: Add tracepoint support

Add tracepoint support for QRTR with NS as the first candidate. Later on
this can be extended to core QRTR and transport drivers.

The trace_printk() used in NS has been replaced by tracepoints.

Change-Id: I9211c53cd8832e7438de7c244fa5d6528706347f
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Git-commit: dfddb54043f0a377f642bd0e6a28aa40769e2e65
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Chris Lew <clew@codeaurora.org>