HACK: arm64: dts: ti: k3-j784s4-evm: Remove HS400 mode support for eMMC

commit ca6a775097f0c879eaa7a2ddfe79c09fd08dffb6 from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git



The eMMC fails to enumerate intermittently on HS400 mode. Also
observing multiple CQE recovery warnings.

Update the sdhci0 node to disable HS400.

Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Bhavya Kapoor <b-kapoor@ti.com>
Cc: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Udit Kumar <u-kumar1@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>