power: supply: move HDQ interface for bq27xxx from w1 to power/supply

The HDQ interface driver should be in this folder just like the I2C
interface driver. Move this driver out of drivers/w1/slave and into
drivers/power/supply.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 969f500..af63972 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -198,6 +198,15 @@
 	  Say Y here to enable support for batteries with BQ27xxx chips
 	  connected over an I2C bus.
 
+config BATTERY_BQ27XXX_HDQ
+	tristate "BQ27xxx HDQ support"
+	depends on BATTERY_BQ27XXX
+	depends on W1
+	default y
+	help
+	  Say Y here to enable support for batteries with BQ27xxx chips
+	  connected over an HDQ bus.
+
 config BATTERY_BQ27XXX_DT_UPDATES_NVM
 	bool "BQ27xxx support for update of NVM/flash data memory"
 	depends on BATTERY_BQ27XXX_I2C