mvebu: disable also wrt32x due to broken switch

mvebu: disable also wrt32x due to broken switch

WRT32x has identical hardware as WRT3200ACM,
so handle the devices identically.

Reference to:
* FCC approval: WRT32x is a new name for WRT3200ACM hardware
  https://fccid.io/Q87-WRT3200ACM#Grant-TCB-5
    FCC IDENTIFIER: | Q87-WRT3200ACM
    C2PC: - Adding a new model name: WRT32X;

* Linux switch definition:
  https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=2716777b4f21649fb907b4a4fb96e1c8d0a5ec16
    MV88E6176 is mostly compatible to MV88E6352 and is documented
    in the same functional specification. Add support for it.

Fixes: a0bae2fef8 "mvebu: cortexa9: disable devices using broken mv88e6176 switch"
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>