netxen: refactor tx dma mapping code
netxen: refactor tx dma mapping code

Move all tx skb mapping code into netxen_map_tx_skb().

Signed-off-by: Dhananjay Phadke <4fd8366feef70cc1c32b7a8089fd6d8a97ab8728@netxen.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

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