msm: mako-pmic: Update the maximum current supported by LEDs

LEDs on mako can support 12mA. Update the platform data for LED to reflect the same.

CRs-fixed: 514882
Change-Id: I012051f63e39f90123373c78e4280bf008e1bbea
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>