mfd/power: ab8500: Push algorithm to power supply code

The charging algorithm header is only used locally in the
power supply subsystem so push this down into
drivers/power/supply and rename from the confusing
"ux500_chargalg.h" to "ab8500-chargalg.h" for clarity:
it is only used with the AB8500.

This is another remnant of non-DT code needing to pass
data from boardfiles, which we don't do anymore.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/power/supply/ab8500-chargalg.h

@@ -4,8 +4,8 @@
  * Author: Johan Gardsmark <johan.gardsmark@stericsson.com> for ST-Ericsson.
  */
 
-#ifndef _UX500_CHARGALG_H
-#define _UX500_CHARGALG_H
+#ifndef _AB8500_CHARGALG_H_
+#define _AB8500_CHARGALG_H_
 
 #include <linux/power_supply.h>
 
@@ -48,4 +48,4 @@ struct ux500_charger {
 
 extern struct blocking_notifier_head charger_notifier_list;
 
-#endif
+#endif /* _AB8500_CHARGALG_H_ */

drivers/power/supply/ab8500_charger.c

@@ -28,12 +28,12 @@
 #include <linux/mfd/core.h>
 #include <linux/mfd/abx500/ab8500.h>
 #include <linux/mfd/abx500.h>
-#include <linux/mfd/abx500/ux500_chargalg.h>
 #include <linux/usb/otg.h>
 #include <linux/mutex.h>
 #include <linux/iio/consumer.h>
 
 #include "ab8500-bm.h"
+#include "ab8500-chargalg.h"
 
 /* Charger constants */
 #define NO_PW_CONN			0

drivers/power/supply/abx500_chargalg.c

@@ -28,10 +28,10 @@
 #include <linux/mfd/core.h>
 #include <linux/mfd/abx500.h>
 #include <linux/mfd/abx500/ab8500.h>
-#include <linux/mfd/abx500/ux500_chargalg.h>
 #include <linux/notifier.h>
 
 #include "ab8500-bm.h"
+#include "ab8500-chargalg.h"
 
 /* Watchdog kick interval */
 #define CHG_WD_INTERVAL			(6 * HZ)

drivers/power/supply/pm2301_charger.c

@@ -18,13 +18,13 @@
 #include <linux/i2c.h>
 #include <linux/workqueue.h>
 #include <linux/mfd/abx500/ab8500.h>
-#include <linux/mfd/abx500/ux500_chargalg.h>
 #include <linux/pm2301_charger.h>
 #include <linux/gpio.h>
 #include <linux/pm_runtime.h>
 #include <linux/pm.h>
 
 #include "ab8500-bm.h"
+#include "ab8500-chargalg.h"
 #include "pm2301_charger.h"
 
 #define to_pm2xxx_charger_ac_device_info(x) container_of((x), \