HID: mcp2221: Remove unnecessary semicolon

Remove unnecessary semicolon at the end of the switch statement.
This is detected by coccinelle.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://patch.msgid.link/20240709012223.17393-1-nichen@iscas.ac.cn


Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>