Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq

update ls1028aqds networking protocol, config in ls1021atwr, env in ls1012a
Add seli3 board support, booke watchdog, update eTSEC support in ppc-qemu
Add DM_SERIAL and lpuart in sl28, add DM_ETH support for some of powerpc platforms

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>