drivers: misc: k3_avs: Add Linux compatibles to maintain sync

The ti,j7200-vtm and ti,j721e-vtm compatibles are used for voltage
and thermal monitoring (VTM) by (drivers/thermal/k3_j72xx_bandgap.c)
in Linux, but the same hardware is used for adaptive voltage scaling
(AVS) in u-boot, This brings both drivers in line with the same
compatibles.

Since the j7200 uses the config as the j721e, the data is inherited
from j721e vs creating a duplicate

Signed-off-by: Neha Francis <n-francis@ti.com>
Signed-off-by: Reid Tonking <reidt@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>