Add basic support for phyBOARD-Segin-i.MX93.
Main features are:
* eMMC
* Ethernet
* SD-Card
* UART
Tested-by: Primoz Fiser <primoz.fiser@norik.com>
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>