The AXP221 has different values for startup time bits from the AXP20X.
Signed-off-by: NQuentin Schulz <quentin.schulz@free-electrons.com>
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>