Staging: r8188eu: core: rtw_xmit: Fixed a coding style issue

Moved the constant ETH_P_IP to the right hand side of the comparison as
per checkpatch.pl

Signed-off-by: Chang Yu <marcus.yu.56@gmail.com>
Link: https://lore.kernel.org/r/e938a8ac0ff3a9d777754a081c7a08026aaae253.1655666628.git.marcus.yu.56@gmail.com


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