mb/asus/f2a85-m_pro: Enable keyboard controller in devicetree

The mainboard has a PS/2 port, so enable the keyboard controller in the
devicetree.

The PS/2 keyboard now works in SeaBIOS payload, but not in GNU/Linux,
probably as ACPI code still needs to be added.

Change-Id: I7846633bc1a3bdf6bffae628e0542bb8fb684804
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45998
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/asus/f2a85-m/devicetree_f2a85-m_pro.cb

@@ -37,7 +37,12 @@ chip northbridge/amd/agesa/family15tn/root_complex
 							irq 0x70 = 4
 						end
 						device pnp 2e.3 off end # COM2/IR
-						device pnp 2e.5 off end # Keyboard
+						device pnp 2e.5 on      # Keyboard
+							io 0x60 = 0x0060        # KBC1 base
+							io 0x62 = 0x0064        # KBC2 base
+							irq 0x70 = 1
+							irq 0x72 = 12
+						end
 						device pnp 2e.6 off end # CIR
 						device pnp 2e.7 on	# GPIO6, GPIO7, GPIO8
 							io 0xe0 = 0x7f