xsigo: xve driver has excessive messages

xsigo: xve driver has excessive messages

Orabug: 24758335

Moved some message types from Warning to debug.

Consolidated multiple messages into single to avoid
flooding of messages on console

Added more counters to identify state of vnic.

Added a debug type xve_info

Reported-by: chien yen <chien.yen@oracle.com>
Signed-off-by: Pradeep Gopanapalli <pradeep.gopanapalli@oracle.com>
Reviewed-by: Aravind Kini <aravind.kini@oracle.com>
Reviewed-by: UmaShankar Tumari Mahabalagiri <umashankar.mahabalagiri@oracle.com>