GPIO direction needs only to be set at init
both functions are now one liners so make them static inline
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26218 a1c6a512-1295-4272-9138-f99709370657
Revive lcd_enable() as well, and use it in _backlight_on/off()
Don't update the lcd framebuffer if the display is off
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18952 a1c6a512-1295-4272-9138-f99709370657