While some support is still missing (USB, LCD), we already have some
prerequisites in place like USB PHY and PWM (for backlight). We also have
gained one new board and some other new drivers since the last time the
defconfig was touched, so enable them all, as well as some possibly useful
commands.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>