drivers/video/backlight/pandora_bl.c: change TWL4030_MODULE_PWM0 to TWL_MODULE_PWM

drivers/video/backlight/pandora_bl.c: change TWL4030_MODULE_PWM0 to TWL_MODULE_PWM

TWL_MODULE_PWM is defined as:
#define TWL_MODULE_PWM		TWL4030_MODULE_PWM0

Use the common module ID define here which will facilitate the upcoming
twl-core cleanup.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>