nwl: Don't turn off clocks and phy on screen blank
This makes the display turn on again on unblank like
echo 1 > /sys/class/graphics/fb0/blank ; sleep 1; echo 0 > /sys/class/graphics/fb0/blank
Since we use a different driver in 5.x don't bother using a DT property but let's keep the code so we remember it was there when comparing drivers for mainlineing.
Closes: #32 (closed)
Signed-off-by: Guido Günther firstname.lastname@example.org