MCUs: update deprecated use of term_from_int32

[UncleGrumpy]

Update all MCU platforms useage of term_from_int32 to safer variants of term_from_int*

See also: #1897

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

[UncleGrumpy]

All values encoded in adc_driver.c with term_from_int28 are 17 bits or less.

[petermm]

Know this extends the scope - but the last remaining is below:

Remaining term_from_int32 call-sites

1. STM32 — gpio_driver.c

File: src/platforms/stm32/src/lib/gpio_driver.c:675

term_put_tuple_element(gpio_tuple, 1, term_from_int32((int32_t) gpio_pin));

Context: Converts an STM32 GPIO pin number to a term inside the interrupt callback.

Recommended replacement: term_from_int11
STM32 GPIO pin numbers are 0–15 per bank, well within 11 bits.
Matches the ESP32 gpio_driver.c fix already applied in this PR.

term_put_tuple_element(gpio_tuple, 1, term_from_int11((int16_t) gpio_pin));

---

2. RP2 — networkdriver.c (IP address octets)

File: src/platforms/rp2/src/lib/networkdriver.c:131-134

terms[0] = term_from_int32((addr >> 24) & 0xFF);
terms[1] = term_from_int32((addr >> 16) & 0xFF);
terms[2] = term_from_int32((addr >> 8) & 0xFF);
terms[3] = term_from_int32(addr & 0xFF);

Context: Builds a {A, B, C, D} IP address tuple. Each octet is 0–255.

Recommended replacement: term_from_int11
Each octet is an unsigned byte (0–255), fits in 11 bits. Alternatively
term_from_int works since these are small constants.

terms[0] = term_from_int11((addr >> 24) & 0xFF);
terms[1] = term_from_int11((addr >> 16) & 0xFF);
terms[2] = term_from_int11((addr >> 8) & 0xFF);
terms[3] = term_from_int11(addr & 0xFF);

---

3. RP2 — networkdriver.c (RSSI)

File: src/platforms/rp2/src/lib/networkdriver.c:718

term rssi = term_from_int32(sta_rssi);

Context: WiFi signal strength (RSSI). Typically −90 to 0 dBm, always a small signed integer.

Recommended replacement: term_from_int11
RSSI values are well within ±1024.

term rssi = term_from_int11((int16_t) sta_rssi);

---

[UncleGrumpy]

This should take care of all of the remaining uses of term_from_int32.