video: xilinxfb: Do not name out_be32 in function name

out_be32 IO function is not supported by ARM.
It is only available for PPC and Microblaze.
Because this driver can be used on ARM let's
remove out_be32 from function name.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>