Pico-W and Pico2-W GPIO Driver not reliably working due to missing second parameter

[Snap-A]

Describe the bug

The GPIO driver for the CYW43439 device can control the LED attached to GPIO-0, but when doing so the LED is not consistently set to the requested state.

This seems due to only providing a single value to the WHD driver that uses the "gpioout" 'iovar' command. The actual number of parameters seems to be two: A mask and a value. See this dicussion

I changed the driver code to set those two parameters and this showed a consistent behavior of the LED. The intention is to create a PR with these changes for discussion.

Regression

• This is a regression.

Steps to reproduce

Steps to reproduce:
Compile and flash sample in Pico2-W

1. west build -p always -b rpi_pico2/rp2350a/m33/w zephyr/samples/boards/raspberrypi/pico_w_wifi_led
2. west flash --openocd <path to openocd>

Observe the serial output

[2994] WLAN MAC Address : 88:A2:9E:15:AD:74

[2996] WLAN Firmware    : wl0: Jun  5 2024 06:33:59 version 7.95.88 (cf1d613 CY) FWID 01-7b7cf51a

[3005] WLAN CLM         : API: 12.2 Data: 9.10.39 Compiler: 1.29.4 ClmImport: 1.36.3 Creation: 2024-04-16 21:20:55 

[3014] WHD VERSION      : 3.3.3.26653
[3017]  : WIFI5-v3.3.3
[3019]  : GCC 14.3
[3021]  : 2025-04-14 03:18:50 +0000
*** Booting Zephyr OS build ebc49dcf1c77 ***
Pico W WiFi + LED Demo
LED blinking started
Starting WiFi scan...
<Some AP listed here>
WiFi scan complete
Demo complete - LED continues blinking

Watch the LED and see that it is not following a regular pattern.

Relevant log output

N/A

Impact

Functional Limitation – Some features not working as expected, but system usable.

Environment

Found in main dev branch and it all releases since v4.4.0 when the driver was added.

Additional Context

No response