staging: rtl8188eu: change bLeisurePs' type to bool

bLeisurePs is used as a boolean variable. Change its type from
u8 to bool.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210419201126.25633-1-martin@kaiser.cx


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