staging: vc04_services: Remove unused macros

#define VCHI_VERSION(v_) { v_, v_ }

#define VCHI_VERSION_EX(v_, m_) { v_, m_ }

typedef enum {

   VCHI_VEC_POINTER,

   VCHI_VEC_HANDLE,

   VCHI_VEC_LIST

} VCHI_MSG_VECTOR_TYPE_T;

typedef struct vchi_msg_vector_ex {

   VCHI_MSG_VECTOR_TYPE_T type;

   union {

      // a memory handle

	struct {

		VCHI_MEM_HANDLE_T handle;

		uint32_t offset;

		int32_t vec_len;

	} handle;

      // an ordinary data pointer

	struct {

		const void *vec_base;

		int32_t vec_len;

      } ptr;

      // a nested vector list

	struct {

		struct vchi_msg_vector_ex *vec;

		uint32_t vec_len;

	} list;

   } u;

} VCHI_MSG_VECTOR_EX_T;

// Construct an entry in a msg vector for a pointer (p) of length (l)

#define VCHI_VEC_POINTER(p,l)  VCHI_VEC_POINTER, { { (VCHI_MEM_HANDLE_T)(p), (l) } }

// Construct an entry in a msg vector for a message handle (h), starting at offset (o) of length (l)

#define VCHI_VEC_HANDLE(h,o,l) VCHI_VEC_HANDLE,  { { (h), (o), (l) } }

// Macros to manipulate 'FOURCC' values

#define MAKE_FOURCC(x) ((int32_t)((x[0] << 24) | (x[1] << 16) | (x[2] << 8) | x[3]))

#define FOURCC_TO_CHAR(x) (x >> 24) & 0xFF,(x >> 16) & 0xFF,(x >> 8) & 0xFF, x & 0xFF

// Opaque service information

struct opaque_vchi_service_t;