staging: r8188eu: merge blink_work and SwLedBlink1

blink_work is the only caller of SwLedBlink1. Merge the two functions.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211226195556.159471-20-martin@kaiser.cx


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