media: b2c2: flexcop: Fix coding style issues

The code in flexcop.c has several instances where spaces are missing
after commas in function call arguments. This violates the Linux
kernel coding style guidelines.

This patch cleans up these minor style issues by adding the required
spaces. This is a purely stylistic change with no functional impact
and improves overall code readability and consistency.

Signed-off-by: Darshan Rathod <darshanrathod475@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>