staging: rtl8712: Match alignment with open parenthesis.

Matched function arguments alignment with its open parenthesis. This patch
fixes the following checkpatch issue:

CHECK: Alignment should match open parenthesis

Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>