The current configuration of DDR on AM654 base board is for 1600MTs but
the file name is specified as k3-am654-base-board-ddr4-1600MHz.dtsi.
Since 1600MHz is misleading, rename it to
k3-am654-base-board-ddr4-1600MTs.dtsi
Signed-off-by: James Doublesin <doublesin@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>