MFC r272190:

cxgbe(4): explicitly set various if_hw_tso* values.
MFC r273280:

cxgb(4): reset the PHY if it generates an interrupt for no apparent reason.
MFC r273615:

cxgbe(4): bump up PF4's share of some global resources.

This increases the size of the per-port RSS slice and also allows the
driver to use a larger number of tx and rx queues.

S2curity:
MFC r271328:

Whitespace nit.