AM33XX and TI814X have a similar mux though the pinmux register
layout and address space differ. Add a separate ti814x mux include
to support the TI814X-specific differences.
Signed-off-by: NMatt Porter <mporter@ti.com>
Reviewed-by: NTom Rini <trini@ti.com>
Acked-by: NPeter Korsgaard <jacmet@sunsite.dk>