gpio: 104-dio-48e: Enable use_raw_spinlock for dio48e_regmap_config

The dio48e regmap can be used in an interrupt context by regmap-irq. To
prevent a deadlock, enable use_raw_spinlock for dio48e_regmap_config.

Fixes: 2f7e845 ("gpio: 104-dio-48e: Migrate to the regmap-irq API")
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: William Breathitt Gray

drivers/gpio/gpio-104-dio-48e.c

@@ -86,6 +86,7 @@ static const struct regmap_config dio48e_regmap_config = {
 	.volatile_table = &dio48e_volatile_table,
 	.precious_table = &dio48e_precious_table,
 	.cache_type = REGCACHE_FLAT,
+	.use_raw_spinlock = true,
 };
 
 /* only bit 3 on each respective Port C supports interrupts */