i2c: rcar: refactor private flags

Use BIT macro to avoid shift-31-problem, indent a little more and use
GENMASK to make it easier to add new flags.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
(cherry picked from commit b07531acd55180efc95e334605f04ca1eaf4e003)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
1 file changed