qcom: spmi-wled: Add support for short circuit handling

Handle the short circuit(SC) interrupt and check if the SC interrupt
is valid. Re-enable the module to check if it goes away. Disable the
module altogether if the SC event persists.

Change-Id: I2e63a38936deaf4fa4c422c39ef728867071a2de
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>