Reduced number of INFO logs in BNX2X PMD by converting some INFO
logs to DEBUG and few NOTICE logs to INFO, removing extra new lines,
printing banner bar once for the adapter and device specific info.
Fixes: ba7eeb035a ("net/bnx2x: fix logging to include device name")
Fixes: 540a211084 ("bnx2x: driver core")
Cc: stable@dpdk.org
Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>