net/i40e/base: fix WoL failure on PF reset

net/i40e/base: fix WoL failure on PF reset

By default the device clears all MAC filter information on PF Reset.
However, this will cause Wake-On-LAN to fail because the wake filters
are deleted on transition to D3 power state. To get around this,
firmware is adding functionality to preserve certain MAC filters during
PFR. These bits allow the driver tell the FW which filters to preserve.

Set the datalen field and add I40E_AQ_FLAG_BUF/I40E_AQ_FLAG_RD flags in the
desc struct for the WoL/Proxy AQ descriptors. The WoL/Proxy AQ commands
were failing because these were missing.

Fixes: 3c89193a36fd ("i40e/base: support WOL config for X722")

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>