regmap: Add I2C bus support

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/base/regmap/Makefile b/drivers/base/regmap/Makefile
index 7532e13..ee5109d 100644
--- a/drivers/base/regmap/Makefile
+++ b/drivers/base/regmap/Makefile
@@ -1 +1,2 @@
 obj-$(CONFIG_REGMAP) += regmap.o
+obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o