staging: rtl8723bs: Fix No space before tabs

Fix "WARNING: please, no space before tabs"
reported by checkpatch

Signed-off-by: Alaa Mohamed <eng.alaamohamedsoliman.am@gmail.com>
Link: https://lore.kernel.org/r/20220331130948.74835-1-eng.alaamohamedsoliman.am@gmail.com


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