[SPARC]: Fix sbusfb build.

sbusfb_compat_ioctl() needs to return int, not long, as that
is what the fb_ops->fb_compat_ioctl method prototype wants.

Need to git rid of the "struct file *file" first argument to
fbiogetputcmap() and fbiogscursor() to match calls done in
sbusfb_compat_ioctl().

Signed-off-by: David S. Miller <davem@davemloft.net>