Add compatible string fsl,ls1021a-wdt for watchdog node and failback to
fsl,imx27-wdt. And remove undocument property clock-names.

Fix below CHECK_DTB warning:
arch/arm/boot/dts/nxp/ls/ls1021a-moxa-uc-8410a.dtb: watchdog@2ad0000 (fsl,imx21-wdt): big-endian: False schema does not allow True

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 arch/arm/boot/dts/nxp/ls/ls1021a.dtsi | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/ls/ls1021a.dtsi b/arch/arm/boot/dts/nxp/ls/ls1021a.dtsi
index 444fa5e2d42cc8f0ad81efded818b4420683622b..20a9de74d5822904b7f9be56f1b25171cbe64aad 100644
--- a/arch/arm/boot/dts/nxp/ls/ls1021a.dtsi
+++ b/arch/arm/boot/dts/nxp/ls/ls1021a.dtsi
@@ -609,11 +609,10 @@ pwm7: pwm@2a40000 {
 		};
 
 		wdog0: watchdog@2ad0000 {
-			compatible = "fsl,imx21-wdt";
+			compatible = "fsl,ls1021a-wdt", "fsl,imx21-wdt";
 			reg = <0x0 0x2ad0000 0x0 0x10000>;
 			interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&clockgen 4 1>;
-			clock-names = "wdog-en";
 			big-endian;
 		};
 

-- 
2.34.1