leds: leds-qpnp: Change max current to 200mA for flash LED

Flash LED requires a max current of 200mA when used as torch light.
Existing implementation 1A for torch light and this might cause
issue for flash usage.

Change-Id: I44f1a9e73f27b6613356f82e20cf123f42172f8d
Signed-off-by: Chun Zhang <chunz@codeaurora.org>