regmap: Remove unused type and list fields from bus interface

We no longer enumerate the bus types, we rely on the driver telling us
this on init.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/base/regmap/regmap-i2c.c

@@ -90,7 +90,6 @@ static int regmap_i2c_read(struct device *dev,
 }
 
 static struct regmap_bus regmap_i2c = {
-	.type = &i2c_bus_type,
 	.write = regmap_i2c_write,
 	.gather_write = regmap_i2c_gather_write,
 	.read = regmap_i2c_read,

drivers/base/regmap/regmap-spi.c

@@ -47,7 +47,6 @@ static int regmap_spi_read(struct device *dev,
 }
 
 static struct regmap_bus regmap_spi = {
-	.type = &spi_bus_type,
 	.write = regmap_spi_write,
 	.gather_write = regmap_spi_gather_write,
 	.read = regmap_spi_read,

include/linux/regmap.h

@@ -60,8 +60,6 @@ typedef int (*regmap_hw_read)(struct device *dev,
 /**
  * Description of a hardware bus for the register map infrastructure.
  *
- * @list: Internal use.
- * @type: Bus type, used to identify bus to be used for a device.
  * @write: Write operation.
  * @gather_write: Write operation with split register/value, return -ENOTSUPP
  *                if not implemented  on a given device.
@@ -73,8 +71,6 @@ typedef int (*regmap_hw_read)(struct device *dev,
  *                  a read.
  */
 struct regmap_bus {
-	struct list_head list;
-	struct bus_type *type;
 	regmap_hw_write write;
 	regmap_hw_gather_write gather_write;
 	regmap_hw_read read;