Typedef mux_req_t

typedef struct packed {                                         
    mux_aw_t aw;                                                 
    logic     aw_valid;                                           
    w_t  w;                                                  
    logic     w_valid;                                            
    logic     b_ready;                                            
    mux_ar_t ar;                                                 
    logic     ar_valid;                                           
    logic     r_ready;                                            
  } mux_req_t;

AXI requests from the multiplexer