power_supply: fix dependency of tosa_battery

tosa_battery should also depend on wm97xx_ts as it uses dac-accessing
functions from that module.

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

drivers/power/Kconfig

@@ -51,7 +51,7 @@ config BATTERY_OLPC
 
 config BATTERY_TOSA
 	tristate "Sharp SL-6000 (tosa) battery"
-	depends on MACH_TOSA && MFD_TC6393XB
+	depends on MACH_TOSA && MFD_TC6393XB && TOUCHSCREEN_WM97XX
 	help
 	  Say Y to enable support for the battery on the Sharp Zaurus
 	  SL-6000 (tosa) models.