arm64: dts: ti: k3-am62x: Add required voltage supplies for TEVI-OV5640

arm64: dts: ti: k3-am62x: Add required voltage supplies for TEVI-OV5640

The device tree overlay for TEVI-OV5640 requires following voltage
supplies as mentioned in the power section [1]

AVDD-supply: Analog voltage supply, 2.8 volts
DOVDD-supply: Digital I/O voltage supply, 1.8 volts
DVDD-supply: Digital core voltage supply, 3.3 volts

Add them in the DT overlay.

Link: https://www.technexion.com/wp-content/uploads/2023/09/product-brief_tevi-ov5640.pdf
Signed-off-by: Rishikesh Donadkar <r-donadkar@ti.com>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Link: https://lore.kernel.org/r/20250502162539.322091-5-r-donadkar@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>