OMAP3: Devkit8000: Fix tps65930 pullup/pulldown configuration

gpio7 on the tps65930 is used as an output on the devkit8000 and
gpio1 is not connected. Remove gpio7 and change gpio1 to pulldown

Signed-off-by: Daniel Morsing <daniel.morsing@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>