Cross-merge networking fixes after downstream PR (net-7.1-rc6).

Conflicts:

drivers/net/phy/air_en8811h.c
  d895767c33781 ("net: phy: air_en8811h: add AN8811HB MCU assert/deassert support")
  dddfadd75197e ("net: phy: Add Airoha phy library for shared code")
  5226bb6634cdf ("net: phy: air_phy_lib: Factorize BuckPBus register accessors")
  e08f0ea6daf2e ("net: phy: Rename Airoha common BuckPBus register accessors")

net/sched/sch_netem.c
  a2f6ed7b4873 ("net/sched: netem: add per-impairment extended statistics")
  9552b11e3eda ("net/sched: fix packet loop on netem when duplicate is on")

Adjacent changes:

drivers/dpll/zl3073x/core.c
  c1224569cef0 ("dpll: zl3073x: make frequency monitor a per-device attribute")
  54e65df8cf18 ("dpll: zl3073x: report FFO as DPLL vs input reference offset")

net/iucv/af_iucv.c
  347fdd4df85f ("af_iucv: convert to getsockopt_iter")
  3589d20a666c ("net/iucv: fix locking in .getsockopt")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Rename the BuckPBus register accessors functions present in air_phy_lib
and their calls in air_en8811h driver, so all exported functions start
with the same prefix.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Link: https://patch.msgid.link/20260526-add-airoha-an8801-support-v5-4-01aea8dee69b@collabora.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

In preparation of Airoha AN8801R PHY support, move the BuckPBus
register accessors and definitions, present in air_en8811h driver,
into the Airoha PHY shared code (air_phy_lib), so they will be usable
by the new driver without duplicating them.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Link: https://patch.msgid.link/20260526-add-airoha-an8801-support-v5-3-01aea8dee69b@collabora.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

In preparation of Airoha AN8801R PHY support, split out the interface
functions that will be common between the already present air_en8811h
driver and the new one, and put them into a new library named
air_phy_lib.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Link: https://patch.msgid.link/20260526-add-airoha-an8801-support-v5-2-01aea8dee69b@collabora.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>