fixes gt911 without reset pin (BSP-642)

[AkaBkn]

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[espzav]

I am not sure, if I understand right your changes. But this part of code needs both pins (interrupt + reset). This change is useless from my point of view.

[AkaBkn]

its not. without the patch, you can not use this driver without the reset pin (esp_lcd_touch_gt911->config.rst_gpio_num = GPIO_NUM_NC). but devices like the LilyGo T-Deck Plus have the reset pin not connected. with this change you can use the driver on those devices.