qualcommax: fix PCIe card wifi node address

qualcommax: fix PCIe card wifi node address

Unlike other buses, for PCIe child nodes we should not use "wifi@1,0" as
the bus adress since for PCI devices the actual device adress on the bus is
actually set via the "reg" property and the node name is unused completely.

Though, it will cause DTC to throw warnings, so after investigation and
similar issue upstream[1] simply set the nodes to "wifi@0,0" instead.

[1] https://lists.infradead.org/pipermail/linux-arm-kernel/2021-August/680846.html

Link: https://github.com/openwrt/openwrt/pull/18789
Signed-off-by: Robert Marko <robimarko@gmail.com>