Staging: sxg: Add Jumbo frames support to Sahara SXG Driver

This patch adds Jumbo frame support to Sahara's SXG Driver.

Signed-off-by: LinSysSoft Sahara Team <saharaproj@linsyssoft.com>
Signed-off-by: Mithlesh Thukral <mithlesh@linsyssoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>