[PATCH v2] regmap: irq: add chip option mask_writeonly

Some irq controllers have writeonly/multipurpose register layouts. In those cases we read invalid data back. Here we add the option mask_writeonly as masking option. Signed-off-by: Michael Grzeschik --- v1 -> v2: - rebased on regmap/for-next - removed

[PATCH v2] regmap: irq: add chip option mask_writeonly

Some irq controllers have writeonly/multipurpose register layouts. In those cases we read invalid data back. Here we add the option mask_writeonly as masking option. Signed-off-by: Michael Grzeschik --- v1 -> v2: - rebased on regmap/for-next - removed unneeded extra empty lines from