i2c: sh_mobile: remove unneeded semicolon

Eliminate the following coccicheck warning:
./drivers/i2c/busses/i2c-sh_mobile.c:849:3-4: Unneeded semicolon

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>