Hwinfo shows that sk98lin (which is missing from linux-libre) has an use for this ethernet device, but works perfectly without it anyway.

lspci -vmmnn

Slot:	02:15.0
Class:	Ethernet controller [0200]
Vendor:	Marvell Technology Group Ltd. [11ab]
Device:	88E8001 Gigabit Ethernet Controller [4320]
SVendor:	Acer Incorporated [ALI] [1025]
SDevice:	Device [0085]
Rev:	13

lspci -nnk

02:15.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller [11ab:4320] (rev 13)
	Subsystem: Acer Incorporated [ALI] Device [1025:0085]
	Kernel driver in use: skge
	Kernel modules: skge

05:0c.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13)
	Subsystem: ASUSTeK Computer Inc. Marvell 88E8001 Gigabit Ethernet Controller (Asus)
	Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 17
	Memory at d4014000 (32-bit, non-prefetchable) [size=16K]
	I/O ports at a400 [size=256]
	Expansion ROM at 40000000 [disabled] [size=128K]
	Capabilities: [48] Power Management version 2
	Capabilities: [50] Vital Product Data
	Kernel driver in use: skge

lspci -vvnnk

02:05.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller [11ab:4320] (rev 13)
	Subsystem: ASUSTeK Computer Inc. Marvell 88E8001 Gigabit Ethernet Controller (Asus) [1043:811a]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (5750ns min, 7750ns max), Cache Line Size: 16 bytes
	Interrupt: pin A routed to IRQ 22
	Region 0: Memory at feafc000 (32-bit, non-prefetchable) [size=16K]
	Region 1: I/O ports at d800 [size=256]
	Expansion ROM at feac0000 [disabled] [size=128K]
	Capabilities: [48] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=7 DScale=1 PME-
	Capabilities: [50] Vital Product Data
		Product Name: Yukon Gigabit Ethernet 10/100/1000Base-T Adapter
		Read-only fields:
			[PN] Part number: Yukon 88E8001
			[EC] Engineering changes: Rev. 1.3
			[MN] Manufacture ID: Marvell
			[SN] Serial number: AbCdEfG334454
			[CP] Extended capability: 01 10 cc 03
			[RV] Reserved: checksum good, 10 byte(s) reserved
		Read/write fields:
			[RW] Read-write area: 121 byte(s) free
		End
	Kernel driver in use: skge
	Kernel modules: skge

hwinfo

20: PCI 205.0: 0200 Ethernet controller
  [Created at pci.386]
  Unique ID: uy4f.ku_pZL9tQC3
  Parent ID: 6NW+.c7JTK_YUBi2
  SysFS ID: /devices/pci0000:00/0000:00:1e.0/0000:02:05.0
  SysFS BusID: 0000:02:05.0
  Hardware Class: network
  Model: "ASUSTeK Marvell 88E8001 Gigabit Ethernet Controller (Asus)"
  Vendor: pci 0x11ab "Marvell Technology Group Ltd."
  Device: pci 0x4320 "88E8001 Gigabit Ethernet Controller"
  SubVendor: pci 0x1043 "ASUSTeK Computer Inc."
  SubDevice: pci 0x811a "Marvell 88E8001 Gigabit Ethernet Controller (Asus)"
  Revision: 0x13
  Driver: "skge"
  Driver Modules: "skge"
  Device File: enp2s5
  Memory Range: 0xfeafc000-0xfeafffff (rw,non-prefetchable)
  I/O Ports: 0xd800-0xd8ff (rw)
  Memory Range: 0xfeac0000-0xfeadffff (ro,non-prefetchable,disabled)
  IRQ: 22 (no events)
  HW Address: 00:11:2f:09:e8:29
  Permanent HW Address: 00:11:2f:09:e8:29
  Link detected: no
  Module Alias: "pci:v000011ABd00004320sv00001043sd0000811Abc02sc00i00"
  Driver Info #0:
    Driver Status: sk98lin is not active
    Driver Activation Cmd: "modprobe sk98lin"
  Driver Info #1:
    Driver Status: skge is active
    Driver Activation Cmd: "modprobe skge"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #15 (PCI bridge)