staging: rtl8723bs: Fix indentation issues

Fix the following checkpatch indentation issues:
- WARNING: suspect code indent for conditional statements (32, 48)
- WARNING: suspect code indent for conditional statements (24, 24)
- ERROR: code indent should use tabs where possible
Signed-off-by: Franziska Naepelt <franziska.naepelt@gmail.com>
Link: https://lore.kernel.org/r/20230619180351.18925-1-franziska.naepelt@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>