arm_adi_v5: Adding Nuvoton NPCX quirk

arm_adi_v5: Adding Nuvoton NPCX quirk

We found that the NPCX has an issue with the byte lanes so that non byte
aligned writes aren't working. To overcome this, for byte accesses we
copy the byte to be written to all of the byte lanes.

doc: Document command nu_npcx_quirks

Signed-off-by: benjbender <benjbender@gmail.com>
[Andreas Fritiofson: Squashed commits]
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Change-Id: I9ef63bf692f4e68f57459e1ec33f3abcbf533cd2
Reviewed-on: https://review.openocd.org/c/openocd/+/6630
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>