net: xilinx_emacps: Fix issue with wake-on-LAN

When checking the WOL register value against the option masks, use '&'
rather than '|' so the bitwise operations work as expected.

Signed-off-by: Jeff Westfahl <jeff.westfahl@ni.com>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Acked-by: Jaeden Amero <jaeden.amero@ni.com>
Acked-by: Gratian Crisan <gratian.crisan@ni.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>