staging: r8188eu: merge _ReadLEDSetting() into ReadAdapterInfo8188EU()

Function _ReadLEDSetting() sets only a single variable and the only
user is ReadAdapterInfo8188EU(). Remove _ReadLEDSetting() and set the
variable in ReadAdapterInfo8188EU() directly.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20211228101120.9120-11-straube.linux@gmail.com


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