ASoC: rk817: Remove unneeded semicolon

Fix the following coccicheck warnings:

./sound/soc/codecs/rk817_codec.c:49:2-3: Unneeded semicolon.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1622802209-45031-1-git-send-email-jiapeng.chong@linux.alibaba.com


Signed-off-by: Mark Brown <broonie@kernel.org>