avr: re-introduce UID to new VALUE messages, set UID in VALUE response messages.

avr/common/utils.asm

@@ -185,15 +185,13 @@ Utils_Fini:
 
 
 ; ---------------------------------------------------------------------------
-; Utils_FillSram
+; @routine Utils_FillSram @global
 ;
-; IN:
-; - x: pointer to SRAM to fill
-; - r16: value to fill the SRAM with
-; - r17: size of area to fill
-; OUT:
-; - nothing
-; MODIFIED REGISTERS: r17, x
+; @return X   points directly behind filled memory
+; @param  X   pointer to SRAM to fill
+; @param  r16 value to fill the SRAM with
+; @param  r17 size of area to fill
+; @clobbers r17
 
 Utils_FillSram:
   tst r17
@@ -205,6 +203,7 @@ Utils_FillSram_loop:
   brne Utils_FillSram_loop
 Utils_FillSram_end:
   ret
+; @end