arm64: dts: ti: k3-j7200-som: Describe hyperflash partition info

commit fc7b6611ad93f6ffe590cebf772ce572f9bffcbb from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git

Describe hyperflash flash partition information in device tree
so as to remove passing partition information in `mtdparts`
commandline parameter.

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>