[project][imx6ul] Update for imx target changes

Choice of debug UART should be on target level
as this is what target is for.

All definitions for MEMBASE, MEMSIZE and KERNEL_BASE
are the same. Move them to platform and make them default.

Change-Id: I20bf4d4fbecdb951113fe837fa6cd00f2cd0cab2
4 files changed
tree: 31c74dfa4b6cd0548588692d83866a28ee69979e
  2. project/