PWT buzzer driver: conditionalize on TARGET_HAS_BUZZER Here we add a new target config preprocessor symbol TARGET_HAS_BUZZER, currently defined for c11x and c139; later we also expect to have it on for FC Venus, and in FC Magnetite we are going to turn it on for target dsample, just for the sake of completeness and philosophical correctness.

#define	CONFIG_TARGET_LUNA	1
#define	CONFIG_TARGET_TANGO	1
#define	CONFIG_TARGET_LEO_RFFE	1
#define	CONFIG_GPIO046_OUTPUTS	1
#define	CONFIG_MCSI_UNUSED	1
#define	CONFIG_GPIO1_HIGH	1
#define	CONFIG_GPIO3_OUTPUT	1
#define	GPIO1_SPEAKER_CTRL	0
#define	UARTFAX_CLASSIC_DTR_DCD	0
#define	ABB_SLEEP_RESTRICTION	1
#define	TARGET_HAS_PWL		1