Staging: rtl8723bs: remove named enums in rtw_pwrctrl.h

Remove the following unnecessary enum names in
include/rtw_pwrctrl.h:

	enum Power_Mgnt
	enum _PS_BBRegBackup_

Signed-off-by: Marco Cesati <marcocesati@gmail.com>
Link: https://lore.kernel.org/r/20210324124456.25221-13-marcocesati@gmail.com


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