staging: rtl8723bs: Change return type of hal_btcoex_IsLpsOn()

Change return type of hal_btcoex_IsLpsOn from u8 to bool as the
function only returns boolean values.
Modify a comparison of a boolean value to false to instead check that
boolean value directly.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190802062444.30384-3-nishkadg.linux@gmail.com


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