bnxt_en: Remove duplicated include bnxt_devlink.c

bnxt_ethtool.h is included twice in bnxt_devlink.c,
remove one of them.

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=1817Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220804003722.54088-1-yang.lee@linux.alibaba.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c

@@ -21,7 +21,6 @@
 #include "bnxt_ptp.h"
 #include "bnxt_coredump.h"
 #include "bnxt_nvm_defs.h"
-#include "bnxt_ethtool.h"
 
 static void __bnxt_fw_recover(struct bnxt *bp)
 {