configs: phycore_am62x_a53: Add more commands

Add i2c and rtc commands with all dependencies which are
required for testing.

Additionally, add smc and cache commands to boot Zephyr on the A53.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
1 file changed