UBUNTU: d-i: Add bnxt_en to nic-modules.

BugLink: http://bugs.launchpad.net/bugs/1720466Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

debian.master/d-i/modules/nic-modules

@@ -40,6 +40,7 @@ be2net ?
 bmac ?
 bnx2 ?
 bnx2x ?
+bnxt_en ?
 bonding ?
 brcmfmac ?
 brcmsmac ?