regulator: Drop unnecessary struct member

The irq_flags from the regulator IRQ helper description struct was never
used. The IRQ flags are passed as parameters to helper registration
instead.

Remove the unnecessary struct field.

Fixes: 7111c6d1b31b ("regulator: IRQ based event/error notification helpers")
Signed-off-by: Matti Vaittinen <[e-mail]>
Link: https://lore.kernel.org/r/5f6371e[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

include/linux/regulator/driver.h

···
  */
 struct regulator_irq_desc {
 	const char *name;
-	int irq_flags;
 	int fatal_cnt;
 	int reread_ms;
 	int irq_off_ms;