[L] Change in coreboot[main]: mb/asrock: Add Z97E-ITX/ac (Haswell/Broadwell)

[Nicholas Chin (Code Review)]

Attention is currently required from: Jan Philipp Groß, Máté Kukri.

Nicholas Chin has posted comments on this change by Jan Philipp Groß. ( https://review.coreboot.org/c/coreboot/+/82760?usp=email )

Change subject: mb/asrock: Add Z97E-ITX/ac (Haswell/Broadwell)
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Patch Set 14:

(2 comments)

File src/mainboard/asrock/z97e-itx_ac/Kconfig:

https://review.coreboot.org/c/coreboot/+/82760/comment/45d50556_37c4ca84?usp... :
PS14, Line 1: if BOARD_ASROCK_Z97E_ITX_AC
Add SPDX header
```suggestion
## SPDX-License-Identifier: GPL-2.0-or-later
if BOARD_ASROCK_Z97E_ITX_AC
```

File src/mainboard/asrock/z97e-itx_ac/hda_verb.c:

https://review.coreboot.org/c/coreboot/+/82760/comment/1c53fdfa_96e0ccad?usp... :
PS14, Line 14: 0x411111f0
```suggestion
    AZALIA_PIN_CFG(0, 0x17, AZALIA_PIN_CFG_NC(0)),
```
This macro means the same thing as this raw hex value. See commit ca9f94854176 (mb/**/hda_verb: Use `AZALIA_PIN_CFG_NC(0)`) for reference.