staging: r8188eu: convert u32 fields of rt_firmware_hdr to __le32

Convert the u32 fields of struct rt_firmware_hdr to __le32 for
consistency.

Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220417175441.13830-3-straube.linux@gmail.com


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