staging: rts5208: shorten long line in func call

Add a newline after the first argument.
To respect the 80 character line limit.
Found using checkpatch.pl.

Signed-off-by: R Veera Kumar <vkor@vkten.in>
Link: https://lore.kernel.org/r/20200319094835.GA2878@tulip.local


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>