[qca-nss-sfe] Refactoring SFE code

This refactoring contains the following areas.
   1) delete fast-classifier and SFE CM.
   2) combine all the files into one kernel module.
   3) move the definitions in sfe_ipv4 and sfe_ipv6 to separate header files.
   4) add debug header file.
   5) Filename and namespace changes for sfe_drv.c and sfe_drv.h

Change-Id: I85386e03771eba489d6e319cd2bef4245b340f7f
Signed-off-by: Ratheesh Kannoth <quic_rkannoth@quicinc.com>
27 files changed