net/iavf: increase reset complete wait count

Kernel iavf driver has sent patch to increase the completion
wait time to reduce the "Reset never finished" case.
Follow this action in DPDK iavf driver.
Kernel reference commit:
8e3e4b9da7e6 ("iavf: increase reset complete wait time")

Fixes: 22b123a ("net/avf: initialize PMD")
Cc: stable@dpdk.org

Signed-off-by: Qiming Yang <qiming.yang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

drivers/net/iavf/iavf.h

@@ -18,7 +18,7 @@
 
 #define IAVF_AQ_LEN               32
 #define IAVF_AQ_BUF_SZ            4096
-#define IAVF_RESET_WAIT_CNT       50
+#define IAVF_RESET_WAIT_CNT       500
 #define IAVF_BUF_SIZE_MIN         1024
 #define IAVF_FRAME_SIZE_MAX       9728
 #define IAVF_QUEUE_BASE_ADDR_UNIT 128