dd: support conv=fsync
dd: support "dd --" if CONFIG_DESKTOP=y

function                                             old     new   delta
static.conv_words                                      -      28     +28
dd_main                                             1369    1373      +4
static.keywords                                      848     827     -21
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 32/-21)             Total: 11 bytes

1 file changed