Change to iop_dac_functions simply for use in testing. It is behind DIAG_TEST

compile option not used in a normal system.

src/include/drv/iop_dac_functions.c

@@ -199,7 +199,7 @@ iop_dac_write( )
                     else
                         dac_out = 0;
                 }
-                if ( ( ii == 0 ) && ( jj == 2 ) )
+                if ( ( ii == 0 ) && ( jj == 1 ) )
                 {
                     if ( cycleNum < 100 )
                         dac_out = limit / 20;