POWER: Add JZ4740 battery driver.

Add support for the battery voltage measurement part of the JZ4740 ADC unit.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1416/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 8e9ba17..1e5506b 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -142,4 +142,15 @@
 	help
 	 Say Y to include support for NXP PCF50633 Main Battery Charger.
 
+config BATTERY_JZ4740
+	tristate "Ingenic JZ4740 battery"
+	depends on MACH_JZ4740
+	depends on MFD_JZ4740_ADC
+	help
+	  Say Y to enable support for the battery on Ingenic JZ4740 based
+	  boards.
+
+	  This driver can be build as a module. If so, the module will be
+	  called jz4740-battery.
+
 endif # POWER_SUPPLY