drivers: input: gt911: prefix all macros

[kartben]

Macros with very generic names like DEVICE_ID are really not ideal so prefix them all with GT911_.
Fixes CI issues in weekly run due to some STM HALs already defining DEVICE_ID:

"error: \"DEVICE_ID\" redefined [-Werror]": {
    "quantity": 9,
    "tests": [
        "stm32mp135f_dk/stm32mp135fxx:input.api.synchronous",
        "stm32mp135f_dk/stm32mp135fxx:input.api.thread",
        "stm32mp135f_dk/stm32mp135fxx:sample.modules.lvgl.demo_benchmark",
        "stm32mp135f_dk/stm32mp135fxx:sample.modules.lvgl.demo_benchmark.lvgl_auto",
        "stm32mp135f_dk/stm32mp135fxx:sample.modules.lvgl.demo_keypad_encoder",
        "stm32mp135f_dk/stm32mp135fxx:sample.modules.lvgl.demo_music",
        "stm32mp135f_dk/stm32mp135fxx:sample.modules.lvgl.demo_render",
        "stm32mp135f_dk/stm32mp135fxx:sample.modules.lvgl.demo_stress",
        "stm32mp135f_dk/stm32mp135fxx:sample.modules.lvgl.demo_widgets"
    ],
    "subcounters": {
        "counters": {}
    }
},

simple repro:

west build -b stm32mp135f_dk/stm32mp135fxx samples/modules/lvgl/demos -p

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud