ARM: mediatek: add board_dt_compat entry for the MT6572 SoC

Add a compatible string for the MT6572 SoC.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Max Shevchenko <wctrl@proton.me>
Link: https://lore.kernel.org/r/20250702-mt6572-v4-7-bde75b7ed445@proton.me
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Author: Max Shevchenko

arch/arm/mach-mediatek/mediatek.c

@@ -38,6 +38,7 @@ static void __init mediatek_timer_init(void)
 
 static const char * const mediatek_board_dt_compat[] = {
 	"mediatek,mt2701",
+	"mediatek,mt6572",
 	"mediatek,mt6589",
 	"mediatek,mt6592",
 	"mediatek,mt7623",