Merge branch 'cxgb4-speed-up-reading-on-chip-memory'

Rahul Lakkireddy says:

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cxgb4: speed up reading on-chip memory

This series of patches speed up reading on-chip memory (EDC and MC)
by reading 64-bits at a time.

Patch 1 reworks logic to read EDC and MC.

Patch 2 adds logic to read EDC and MC 64-bits at a time.

v2:
- Dropped AVX CPU intrinsic instructions.
- Use readq() to read 64-bits at a time.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>