staging: rtl8723bs: add spaces between ternary and binary operators

staging: rtl8723bs: add spaces between ternary and binary operators

Fix spacing around binary arithmetic (`+`, `-`) and shift (`>>`) operators
to improve readability and adhere to the Linux kernel coding style.

Reported by checkpatch:

	CHECK: spaces needed around 'operator'

Signed-off-by: Erick Karanja <karanja99erick@gmail.com>
Link: https://lore.kernel.org/r/ff993a669699e902909063aed03bb6183122c9a7.1743851473.git.karanja99erick@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>