This helper to determine alignment for hardware blitting is now in
system/helpers.h, where it does not really belong. Put it into the
framebuffer class instead. Framebuffers that don't need it will just
get a dummy function, the cs_hd2 framebuffer gets the real thing.
Also add a bool function that indicates the need for alignment.
- At the moment supported hardware: CS HD2
Currently known problems:
-------------------------
- Display menus after changing resolution (Reboot required)
- Display headers after changing resolution hd => fullhd (Reboot required)
- Display infobar after changing resolution hd => fullhd (Reboot required)
- Screenshot broken (With new driver and set resolution to 1280x720)
