Add definitions for RDPROOF, WRPROOF and PDCFBYTE bits of the Mode
Register in the updated MMC controller found on the AT91SAM9260 and
AT91SAM9263 processors.
Signed-off-by: NAndrew Victor <andrew@sanpeople.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>