Fix build on 32bit kernels
Include proper header files for wmb()
Use the proper printk format for size_t
Merge branch 'experimental' of https://github.com/pfq/PFQ into experimental

Conflicts:
	kernel/pf_q.c
Do not use __netdev_pick_tx
Revert "Added polimorphic pfq_popcount"

This reverts commit ee828bed9a50c8212d378935df9ecf1a82a9a664.
Merge branch 'experimental' of https://github.com/pfq/PFQ into experimental

Conflicts:
	kernel/pf_q-transmit.c
Merge branch 'experimental' of https://github.com/pfq/PFQ into experimental