Fix FS#10867 and a few more potential issues by imitate target scrollwheel behavior more (although that behavior is suboptimal imo). Also, default for maximum backlight brightness in the sim and move stuff into sim.h.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24289 a1c6a512-1295-4272-9138-f99709370657
4 files changed