arm64: dts: ti: k3-am62-verdin: add label to som adc node

Add a label to ti-ads1015 node to make it easier to reference it
from other nodes.

Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240924120044.130913-3-francesco@dolcini.it


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>