extcon: max77693: fix handling return value of regmap_irq_get_virq

The function can return negative values, so its result should
be assigned to signed variable.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Suggested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
1 file changed