igc: Update I226_K device ID

The device ID for I226_K was incorrectly assigned, update the device
ID to the correct one.

Fixes: bfa5e98c

 ("igc: Add new device ID")
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Nechama Kraus <nechamax.kraus@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>