media: pwc: convert to BIT macro

/* Trace certain actions in the driver */

#define PWC_DEBUG_LEVEL_MODULE	(1<<0)

#define PWC_DEBUG_LEVEL_PROBE	(1<<1)

#define PWC_DEBUG_LEVEL_OPEN	(1<<2)

#define PWC_DEBUG_LEVEL_READ	(1<<3)

#define PWC_DEBUG_LEVEL_MEMORY	(1<<4)

#define PWC_DEBUG_LEVEL_FLOW	(1<<5)

#define PWC_DEBUG_LEVEL_SIZE	(1<<6)

#define PWC_DEBUG_LEVEL_IOCTL	(1<<7)

#define PWC_DEBUG_LEVEL_TRACE	(1<<8)

#define PWC_DEBUG_LEVEL_MODULE	BIT(0)

#define PWC_DEBUG_LEVEL_PROBE	BIT(1)

#define PWC_DEBUG_LEVEL_OPEN	BIT(2)

#define PWC_DEBUG_LEVEL_READ	BIT(3)

#define PWC_DEBUG_LEVEL_MEMORY	BIT(4)

#define PWC_DEBUG_LEVEL_FLOW	BIT(5)

#define PWC_DEBUG_LEVEL_SIZE	BIT(6)

#define PWC_DEBUG_LEVEL_IOCTL	BIT(7)

#define PWC_DEBUG_LEVEL_TRACE	BIT(8)

#define PWC_DEBUG_MODULE(fmt, args...) PWC_DEBUG(MODULE, fmt, ##args)

#define PWC_DEBUG_PROBE(fmt, args...) PWC_DEBUG(PROBE, fmt, ##args)