DFSDM Exported Functions

Modules
	Channel initialization and de-initialization functions
	Channel initialization and de-initialization functions.
	Channel operation functions
	Channel operation functions.
	Channel state function
	Channel state function.
	Filter initialization and de-initialization functions
	Filter initialization and de-initialization functions.
	Filter control functions
	Filter control functions.
	Filter operation functions
	Filter operation functions.
	Filter state functions
	Filter state functions.