rasops_claim_framebuffer
rasops_claim_framebuffer(paddr, height * stride * 4, self);
rasops_claim_framebuffer(fb_aper, adev->fb_aper_size, self);
rasops_claim_framebuffer(reg[0], reg[1], self);
rasops_claim_framebuffer(fb_aper, rdev->fb_aper_size, self);
void rasops_claim_framebuffer(paddr_t, psize_t, struct device *);