linux-phytec-ti

extcon: gpio: Fix typo in comment

This patch fixes the typo in comment of extcon-gpio.c driver.
- 'interrput' -> 'interrupt'

Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>