bnx2x: fix UDP checksum for 57710/57711.
bnx2x: fix UDP checksum for 57710/57711.

Since commit 86564c3f "bnx2x: Remove many sparse warnings" UDP
csum offload is broken for 57710/57711. Fix return value.

Signed-off-by: Dmitry Kravkov <a8cf97adadec4e1b734a39bc5aea71b5741cfca1@broadcom.com>
CC: Ariel Elior <92a30a9cbf4ed4ab5095a5bb86f91e3185f66886@broadcom.com>
CC: Yuval Mintz <e41f02d814a2deb46df84f79ae7bb01b88dc4260@broadcom.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs