configs: Add phycore_am62x_r5_ethboot_defconfig

Provide a defconfig for booting the phycore-am62x via Ethernet.
We need a separate defconfig because the AM62x has not enough internal
SRAM to support all boot sources.

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
2 files changed