dt-bindings: net: bcm4329-fmac: Add BCM4388 PCI compatible

BCM4388 WiFi/BT modules are found on Apple silicon devices using
M2 Pro/Max/Ultra and later. Driver support for this module is not
submitted yet.

Reviewed-by: Neal Gompa <[e-mail]>
Acked-by: Rob Herring (Arm) <[e-mail]>
Signed-off-by: Janne Grunau <[e-mail]>

Documentation/devicetree/bindings/net/wireless/brcm,bcm4329-fmac.yaml

···
           - pci14e4,4488  # BCM4377
           - pci14e4,4425  # BCM4378
           - pci14e4,4433  # BCM4387
+          - pci14e4,4434  # BCM4388
           - pci14e4,449d  # BCM43752
 
   reg: