mesa-7i65: add a few comments

Author: SebKuzminsky

src/hal/drivers/mesa_7i65.comp

@@ -216,14 +216,17 @@ EXTRA_SETUP(){
     }
 
     // Add BSPI Frames
+    // digital inputs and outputs
     r += hm2_tram_add_bspi_frame(name, 4, &CPLD_write,
                             &CPLD_read);
 
+    // analog inputs
     for(i = 0; i < 8; i++) {
         r += hm2_tram_add_bspi_frame(name, 3, &AD7329_write[i],
                                 &AD7329_read[i]);
     }
 
+    // analog outputs
     r += hm2_tram_add_bspi_frame(name, 1, &AD5754_1A,0);
     r += hm2_tram_add_bspi_frame(name, 1, &AD5754_1B,0);
     r += hm2_tram_add_bspi_frame(name, 1, &AD5754_1C,0);