arm64: dts: mediatek: mt7986: prefix BPI-R3 cooling maps with "map-"

arm64: dts: mediatek: mt7986: prefix BPI-R3 cooling maps with "map-"

This fixes:
arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dtb: thermal-zones: cpu-thermal:cooling-maps: 'cpu-active-high', 'cpu-active-low', 'cpu-active-med' do not match any of the regexes: '^map[-a-zA-Z0-9]*$', 'pinctrl-[0-9]+'
        from schema $id: http://devicetree.org/schemas/thermal/thermal-zones.yaml#

Fixes: c26f779a2295 ("arm64: dts: mt7986: add pwm-fan and cooling-maps to BPI-R3 dts")
Cc: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240213061459.17917-1-zajec5@gmail.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>