ab8500-charger: Add UsbLineCtrl2 reference

When the state of USB Charge detection is changed then the calls
use a define for another register in other bank. This change
creates a new define for the correct register and removes the
magic numbers that are present.

Signed-off-by: Marcus Cooper <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Reviewed-by: Hakan BERG <[e-mail]>
Reviewed-by: Jonas ABERG <[e-mail]>

drivers/power/ab8500_charger.c

···
 #define VBUS_DET_DBNC1			0x01
 #define OTP_ENABLE_WD			0x01
 #define DROP_COUNT_RESET		0x01
+#define USB_CH_DET			0x01
 
 #define MAIN_CH_INPUT_CURR_SHIFT	4
 #define VBUS_IN_CURR_LIM_SHIFT		4
···
 					AB8500_CHARGER, AB8500_USBCH_CTRL1_REG,
 					USB_CH_ENA, USB_CH_ENA);
 			/*Enable charger detection*/
-			abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
-					AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x01);
+			abx500_mask_and_set_register_interruptible(di->dev,
+					AB8500_USB, AB8500_USB_LINE_CTRL2_REG,
+					USB_CH_DET, USB_CH_DET);
 			di->invalid_charger_detect_state = 1;
 			/*exit and wait for new link status interrupt.*/
 			return;
···
 			dev_dbg(di->dev,
 					"Invalid charger detected, state= 1\n");
 			/*Stop charger detection*/
-			abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
-					AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x00);
+			abx500_mask_and_set_register_interruptible(di->dev,
+					AB8500_USB, AB8500_USB_LINE_CTRL2_REG,
+					USB_CH_DET, 0x00);
 			/*Check link status*/
 			if (is_ab8500(di->parent))
 				ret = abx500_get_register_interruptible(di->dev,

include/linux/mfd/abx500/ab8500-bm.h

···
  * Bank : 0x5
  */
 #define AB8500_USB_LINE_STAT_REG	0x80
+#define AB8500_USB_LINE_CTRL2_REG	0x82
 #define AB8500_USB_LINK1_STAT_REG	0x94
 
 /*