ARM: config: u8500: Re-enable AB8500 battery charging

This is effectively a revert of the temporary disablement
patch. Battery charging now works!

We also enable static battery data for the Samsung SDI
batteries as used by the U8500 Samsung phones.

Cc: Lee Jones <lee.jones@linaro.org>
Fixes: a1149ae9

 ("ARM: ux500: Disable Power Supply and Battery Management by default")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>