leds: hardcode max_current

Instead of relying to scripts that might be not present in different ramdisks to set the max_current at boot time, hardcode the values in the drivers like it was done for zeus board

The values come from stock rom's pre_hw_config.sh & hw_config.sh

Change-Id: Ia92a0b0193803fefb3f32569e0414604855c64e9
Signed-off-by: Michael Bestas <mikeioannina@gmail.com>