Update supported Intel NIC driver version and firmware version
Signed-off-by: Zhaoyan Chen <zhaoyan.chen@intel.com>
+--------------+-----------------------+------------------+
| DPDK version | Kernel driver version | Firmware version |
+==============+=======================+==================+
+ | 19.08 | 2.9.21 | 7.00 |
+ +--------------+-----------------------+------------------+
| 19.05 | 2.7.29 | 6.80 |
+--------------+-----------------------+------------------+
| 19.02 | 2.7.26 | 6.80 |