power_supply: Add isp1704 charger detection driver

NXP ISP1704 is Battery Charging Specification 1.0 compliant USB
transceiver. This adds a power supply driver for ISP1704 and
ISP1707 USB transceivers.

Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@nokia.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 10143aa..c73d381 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -37,3 +37,4 @@
 obj-$(CONFIG_CHARGER_PCF50633)	+= pcf50633-charger.o
 obj-$(CONFIG_BATTERY_JZ4740)	+= jz4740-battery.o
 obj-$(CONFIG_BATTERY_INTEL_MID)	+= intel_mid_battery.o
+obj-$(CONFIG_CHARGER_ISP1704)	+= isp1704_charger.o