i2c: sh_mobile: update copyright and comments

Update copyright years and add Renesas to it. Add/update comments to
make driver easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2019-01-16 22:05:55 +01:00 • committed by Wolfram Sang
commit 9d899ed400