In big endian machines, the read*/write* accessors do a byteswap for an
inherently little endian PCI bus.  However, rivafb puts the hardwire in big
endian register access, thus the byteswap is not needed. So for 16- and
32-bit access, instead of read*/write*, use __raw_read*/__raw_write* for all
archs.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>