scsi: lpfc: Fix compilation errors on kernels with no CONFIG_DEBUG_FS

The Kernel test robot flagged the following warning:

  ".../lpfc_init.c:7788:35: error: 'struct lpfc_sli4_hba' has no member
   named 'c_stat'"

Reviewing this issue highlighted that one of the recent patches caused the
driver to no longer compile cleanly if CONFIG_DEBUG_FS is not set.

Correct the different areas that are failing to compile.

Link: https://lore.kernel.org/r/20210908050927.37275-1-jsmart2021@gmail.com
Fixes: 02243836

 ("scsi: lpfc: Add support for the CM framework")
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Build-tested-by: Nathan Chancellor <nathan@kernel.org>
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>