staging: octeon: ethernet-tx: Fix formatting issue in function header

staging: octeon: ethernet-tx: Fix formatting issue in function header

Fixes the following W=1 kernel build warning(s):

 drivers/staging/octeon/ethernet-tx.c:507: warning: bad line:

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: linux-staging@lists.linux.dev
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210414181129.1628598-19-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>