linux-phytec-fsl

leds: leds-pwm: make it depend on PWM and not HAVE_PWM

The correct dependency for the leds-pwm is PWM and not HAVE_PWM
since PWM drivers now have their own subsystem.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>