leds: Use devm_kzalloc in leds-pwm.c file
devm_kzalloc() makes cleanup simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
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devm_kzalloc() makes cleanup simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Bryan Wu <bryan.wu@canonical.com>