arm64: dts: ti: k3-am6*: Remove disable-wp for eMMC

Remove disable-wp flag for eMMC nodes since this flag is
only applicable to SD according to the binding doc
(mmc/mmc-controller-common.yaml).

For eMMC, this flag should be ignored but lets remove
anyways to cleanup sdhci nodes.

Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Moteen Shah <m-shah@ti.com>
Link: https://lore.kernel.org/r/20250429151454.4160506-4-jm@ti.com


Signed-off-by: Nishanth Menon <nm@ti.com>