NTB: epf: don't misuse kernel-doc marker

Use "/*" instead of "/**" for common C comments to prevent warnings
from scripts/kernel-doc.

ntb_hw_epf.c:15: warning: expecting prototype for Host side endpoint driver to implement Non(). Prototype was for NTB_EPF_COMMAND() instead

Signed-off-by: Randy Dunlap <[email protected]>
Cc: Jon Mason <[email protected]>
Cc: Dave Jiang <[email protected]>
Cc: Allen Hubbe <[email protected]>
Cc: [email protected]
Signed-off-by: Jon Mason <[email protected]>

Author: rddunlap

drivers/ntb/hw/epf/ntb_hw_epf.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/**
+/*
  * Host side endpoint driver to implement Non-Transparent Bridge functionality
  *
  * Copyright (C) 2020 Texas Instruments