arm: dts: k3-j722s-r5-evm: Add LPDDR4 4000 MT/s configs

Add the latest 4000 MT/s DDR config generated by
Jacinto7_DDRSS_RegConfigTool Rev 0.11 for J722S , make it the
default config and update A53 default clock to 1.4 GHz matching
the default speed grade (K).

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
2 files changed