mfd: madera: Add common support for Cirrus Logic Madera codecs

This adds the generic core support for Cirrus Logic "Madera" class codecs.
These are complex audio codec SoCs with a variety of digital and analogue
I/O, onboard audio processing and DSPs, and other features.

These codecs are all based off a common set of hardware IP so can be
supported by a core of common code (with a few minor device-to-device
variations).

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Nikesh Oswal <Nikesh.Oswal@cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index d9d2cf0..0a89a6a 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -73,6 +73,11 @@
 obj-$(CONFIG_MFD_WM8994)	+= wm8994.o
 obj-$(CONFIG_MFD_WM97xx)	+= wm97xx-core.o
 
+madera-objs			:= madera-core.o
+obj-$(CONFIG_MFD_MADERA)	+= madera.o
+obj-$(CONFIG_MFD_MADERA_I2C)	+= madera-i2c.o
+obj-$(CONFIG_MFD_MADERA_SPI)	+= madera-spi.o
+
 obj-$(CONFIG_TPS6105X)		+= tps6105x.o
 obj-$(CONFIG_TPS65010)		+= tps65010.o
 obj-$(CONFIG_TPS6507X)		+= tps6507x.o