ARM: dts: am43xx: Add i2c voltage scaling firmware to wkup_m3_ipc

Add appropriate firmware-name property for all am43xx platforms.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
[dfustini: change property from 'ti,scale-data-fw' to 'firmware-name']
Signed-off-by: Drew Fustini <dfustini@baylibre.com>
Message-Id: <20220502021508.1342869-4-dfustini@baylibre.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>