ramips: kernel: fix awake-rt305x-dwc2 patch

ramips: kernel: fix awake-rt305x-dwc2 patch

At this point in v5.4 kernel we cannot use dwc2_readl() and
dwc2_writel() since they rely on the value hsotg->needs_byte_swap
which cannot be obtained before the controller wakes up.
We should use readl() and writel() to wake up the controller before
calling dwc2_check_core_endianness().

Fixes: 6be0da90a165 ("ramips: refresh patches")
Signed-off-by: Alexey Dobrovolsky <dobrovolskiy.alexey@gmail.com>
[fixed Fixes: tag]
Signed-off-by: Petr Štetiar <ynezz@true.cz>