kernel: add missing config option BATTERY_DS2781 for 3.7

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 34749

target/linux/generic/config-3.7

@@ -188,6 +188,7 @@ CONFIG_BASE_SMALL=0
 # CONFIG_BATTERY_BQ27x00 is not set
 # CONFIG_BATTERY_DS2760 is not set
 # CONFIG_BATTERY_DS2780 is not set
+# CONFIG_BATTERY_DS2781 is not set
 # CONFIG_BATTERY_DS2782 is not set
 # CONFIG_BATTERY_MAX17040 is not set
 # CONFIG_BATTERY_MAX17042 is not set