Broken config_bar argument of the DPDK driver

[deeonis-ru]

The commit 87c54f5 broke the proper handling of config_bar QDMA DPDK driver. The reason of issue is in qdma_ethdev.c file 87c54f5#diff-a0cb1aa469b6df1f0d60ec7522c4fdd1b1c55f4d92c7ae8cefbeb49169f21e41

In particular, the call of qdma_check_kvargs function was moved from line 600 to line 647, and qdma_identify_bars function is executed before handling the config_bar argument. Hence, qdma_identify_bars always check the BAR0 instead of the configured bar.

The easiest way to fix it is just moving the call of qdma_check_kvargs back. It doesn't look criminal at first glance, at least. But I'm not sure, cause definitely there was a reason for such code modification.