Merge branch 'qualcomm-rmnet-Add-64-bit-stats-and-GRO'

Subash Abhinov Kasiviswanathan says:

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net: qualcomm: rmnet: Add 64 bit stats and GRO

This series adds support for 64 bit per cpu stats and GRO

Patches 1-2 are cleanups of return code and a redundant condition
Patch 3 adds support for 64 bit per cpu stats
Patch 4 adds support for GRO using GRO cells

v1->v2: Since gro_cells_init() could potentially fail, move it from device
setup to ndo_init() as mentioned by Eric.
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Signed-off-by: David S. Miller <davem@davemloft.net>