console: remove duplicated test on gd value

Reorder test on gd value and remove the duplicated test (!gd)
in putc and puts function.

This patch is a preliminary step for rework of this function.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed