The EP93XX_SYSCON defines are now no longer needed outside of the
EP93xx SoC core code, so they can be moved to a private header.
Signed-off-by: NRyan Mallon <rmallon@gmail.com>
Reviewed-by: NMika Westerberg <mika.westerberg@iki.fi>
Acked-by: NHartley Sweeten <hsweeten@visionengravers.com>