[qca-nss-ecm] Replace sysfs with debugfs.

* The new debug file paths are located at /sys/kernel/debug/ecm
  directory.
* Cleaned-up some spinlock code. Removed unnecessary
  spinlock usages and initialize the lock obeckts with the
  DEFINE_SPINLOCK macro.

Change-Id: Ifafbd32195bd0278bd56fc84dffae894f09c26ca
Signed-off-by: Murat Sezgin <msezgin@codeaurora.org>
20 files changed