ixgbe: Combine post-DMA processing of sk_buff fields into single function

ixgbe: Combine post-DMA processing of sk_buff fields into single function

This change combines a number of post-DMA Rx packet processing functions
into a single function.  The advantage of this is that it combines most of
the Rx descriptor processing into one spot so it should all be warm in the
cache.

(cherry picked from commit 8a0da21be84019d605af2c9a92b20a084db77de1)
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Joe Jin <joe.jin@oracle.com>