regmap: irq: make flags bool and put them in a bitfield

This patch makes mask/wake_invert bool and puts all flags into a bitfield
for consistency and to save some space.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 34ebe77..99b0f7c 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -486,10 +486,10 @@
 	unsigned int ack_base;
 	unsigned int wake_base;
 	unsigned int irq_reg_stride;
-	bool init_ack_masked;
-	unsigned int mask_invert;
-	unsigned int wake_invert;
-	bool runtime_pm;
+	bool init_ack_masked:1;
+	bool mask_invert:1;
+	bool wake_invert:1;
+	bool runtime_pm:1;
 
 	int num_regs;