Replaced Windows LFCR by Linux LF to avoid ^R at end of line in vi (replace \r...

Replaced Windows LFCR by Linux LF to avoid ^R at end of line in vi (replace \r --> nothing). Removed trailing spaces.

libraries/base/mm/src/vhdl/mm_master_mux.vhd

@@ -107,7 +107,10 @@ BEGIN
       FOR I IN 0 TO g_nof_masters-1 LOOP
         IF master_mosi_arr(I).wr='1' OR master_mosi_arr(I).rd='1' THEN
           index <= I;    -- index of active master
-          EXIT;
+          EXIT;  -- Found active master, no need to loop further. EXIT is not
+                 -- realy needed, because there should be only one active
+                 -- master, and if there are more active masters, then it
+                 -- does not matter whether the first or the last is selected.
         END IF;
       END LOOP;
     END PROCESS;