staging: rtl8192u: fix broken debug macro

staging: rtl8192u: fix broken debug macro

There is an extra space in the debug macro, when CONFIG_IEEE80211_DEBUG
is switched off, compiler will complain.

drivers/staging/rtl8192u/ieee80211/ieee80211.h:470:42: error: expected ‘)’ before ‘...’ token
  470 | #define IEEE80211_DEBUG (level, fmt, args...) do {} while (0)
drivers/staging/rtl8192u/ieee80211/ieee80211.h:470:47: error: expected ‘;’ before ‘do’
  470 | #define IEEE80211_DEBUG (level, fmt, args...) do {} while (0)

Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20220224064033.1530924-1-ztong0001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>