staging: r8188eu: move (de)init functions from hal to rtw_led

Move the led init and deinit functions from the hal layer to rtw_led.c.
rtl8188eu_led.c and rtl8188e_led.h can now be removed.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211226195556.159471-4-martin@kaiser.cx


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