collie: add battery driver

This driver is based on tosa_battery.c.
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index cea6cef..1186749 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -77,6 +77,13 @@
 	  Say Y to enable support for the battery on the Sharp Zaurus
 	  SL-6000 (tosa) models.
 
+config BATTERY_COLLIE
+	tristate "Sharp SL-5500 (collie) battery"
+	depends on SA1100_COLLIE && MCP_UCB1200
+	help
+	  Say Y to enable support for the battery on the Sharp Zaurus
+	  SL-5500 (collie) models.
+
 config BATTERY_WM97XX
 	bool "WM97xx generic battery driver"
 	depends on TOUCHSCREEN_WM97XX=y