arm64: dts: mt2712e: Fix unit address for pinctrl node

arm64: dts: mt2712e: Fix unit address for pinctrl node

The unit address for the pinctrl node is (0x)1000b000 and not
(0x)10005000, which is the syscfg_pctl_a address instead.

This fixes the following warning:
arch/arm64/boot/dts/mediatek/mt2712e.dtsi:264.40-267.4: Warning
(unique_unit_address): /syscfg_pctl_a@10005000: duplicate
unit-address (also used in node /pinctrl@10005000)

Fixes: f0c64340b748 ("arm64: dts: mt2712: add pintcrl device node.")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221013152212.416661-5-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>