dt-bindings: watchdog: fsl-imx-wdt: add compatible string fsl,ls1046a-wdt

Add compatible string fsl,ls1046a-wdt for ls1046a SoC. fsl,ls1046a-wdt
allows big-endian property.

Signed-off-by: Meng Li <Meng.Li@windriver.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250608030616.3874517-2-Meng.Li@windriver.com


Signed-off-by: Rob Herring (Arm) <robh@kernel.org>