Do firmware download with 64bit LOAD_RAM command, if driver is using
64bit addressing.

Link: https://lore.kernel.org/r/20200114160936.1517-1-tbogendoerfer@suse.deSigned-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>