common/iavf: update README

Updating README to have the latest version for IAVF Base driver.

Signed-off-by: Soumyadeep Hore <soumyadeep.hore@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

drivers/common/iavf/README

@@ -1,20 +1,17 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2019-2021 Intel Corporation
+ * Copyright(c) 2019-2024 Intel Corporation
  */
 
 Intel® IAVF driver
 =================
 
-This directory contains source code of FreeBSD IAVF driver of version
-cid-avf.2021.08.16.tar.gz released by the team which develops
-basic drivers for any IAVF NIC. The directory of base/ contains the
-original source package.
+This directory contains a snapshot of the iavf shared, or base, driver code.
+The snapshot was generated on 2024.09.17.
 
 Updating the driver
 ===================
 
-NOTE: The source code in this directory should not be modified apart from
-the following file(s):
+NOTE: The source code in this directory should not be modified apart from the following files:
 
     iavf_osdep.h
     iavf_impl.c