arm64: dts: mediatek: mt6358: fix dtbs_check error

arm64: dts: mediatek: mt6358: fix dtbs_check error

Fix DTBS check errors for 'mt6358codec' and 'mt6358regulator':

Error message is:
pmic: 'mt6358codec' and 'mt6358regulator' does not match any of the
regexes: 'pinctrl-[0-9]+'.
Rename these two device node to generic 'audio-codec' and 'regulators'.

Fixes: 9f8872221674 ("arm64: dts: mt6358: add PMIC MT6358 related nodes")
Signed-off-by: Macpaul Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: AngeloGioacchino Del Regno <[email protected]>