extcon: Add EXTCON_USB_VBUS_EN for USB Type-C

Add the new extcon EXTCON_USB_VBUS_EN to enable
vbus output.

Change-Id: I83fb75b2a82ad617dc292967bb4917bbfbcb84cb
Signed-off-by: Bin Yang <yangbin@rock-chips.com>

Author: Bin Yang

drivers/extcon/extcon.c

@@ -61,6 +61,11 @@ struct __extcon_info {
 		.id = EXTCON_USB_HOST,
 		.name = "USB_HOST",
 	},
+	[EXTCON_USB_VBUS_EN] = {
+		.type = EXTCON_TYPE_USB,
+		.id = EXTCON_USB_VBUS_EN,
+		.name = "USB_VBUS_EN",
+	},
 
 	/* Charging external connector */
 	[EXTCON_CHG_USB_SDP] = {

include/linux/extcon.h

@@ -45,6 +45,7 @@
 /* USB external connector */
 #define EXTCON_USB		1
 #define EXTCON_USB_HOST		2
+#define EXTCON_USB_VBUS_EN	3
 
 /* Charging external connector */
 #define EXTCON_CHG_USB_SDP	5	/* Standard Downstream Port */