gpio: wcd934x: Fix logic of wcd_gpio_get

The check with register value and mask should be & rather than &&.
While at it, also use "unsigned int" for value variable because
regmap_read() takes unsigned int *val argument.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>