Merge branch 'net-sched-parsing-prints'

Pedro Tammela says:

====================
net/sched: cleanup parsing prints in htb and qfq

These two qdiscs are still using prints on dmesg to report parsing
errors. Since the parsing code has access to extack, convert these error
messages to extack.

QFQ also had the opportunity to remove some redundant code in the
parameters parsing by transforming some attributes into parsing
policies.

v4->v5: Rebased
v3->v4: Drop 'BITification' as suggested by Eric
v2->v3: Address suggestions by Jakub and Simon
v1->v2: Address suggestions by Jakub
====================

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