wifi: rt2x00: Simplify bool conversion

./drivers/net/wireless/ralink/rt2x00/rt2800lib.c:1331:47-52: WARNING: conversion to bool not needed here
./drivers/net/wireless/ralink/rt2x00/rt2800lib.c:1332:47-52: WARNING: conversion to bool not needed here

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7531


Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20231115010017.112081-1-yang.lee@linux.alibaba.com