xsigo: Implementing Jumbo MTU support

xsigo: Implementing Jumbo MTU support

Orabug: 24928804

With Titan and Saturn supporting Jumbo Infiniband frames
uVNIC can have MTU greater than 4k and upto 10k.

Allocate multiple pages for Receive descriptors code changes
for handling multiple page mapping and unmapping.

Took proper care for enabling Jumbo MTU only for Titan and only
in EoiB mode.

If Jumbo MTU is used for non-Titan cards uVNIC driver will NACK
the Install and OFOS will display a failure message for the
install.

Added stats to display Jumbo & removed legacy EoiB HeartBeat code.

Reported-by: Pradeep Gopanapalli <pradeep.gopanapalli@oracle.com>
Signed-off-by: Pradeep Gopanapalli <pradeep.gopanapalli@oracle.com>
Reviewed-by: sajid zia <szia@oracle.com>