regulator: tps65219: change tps65219_regulator_irq_types to static

tps65219_regulator_irq_types is only used in tps65219-regulator.c now,
change it to static.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220826061941.1814723-1-yangyingliang@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>