arm64: dts: k3-am62p: Remove HS200 mode from emmc node

commit 38cca3e07927e64a2c496614c51fee187fdb28f6 from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git



Remove HS200 speed mode from eMMC node since this speed mode
is not working for AM62p.

While we are at it, reorganize the node and fixup legacy otap
according to the datasheet.

Signed-off-by: Judith Mendez <jm@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>