dts: nxp: Fix spi_bus_bridge warning

Rename node name to spi.

Signed-off-by: Felix Wang <fei.wang_3@nxp.com>

Author: FelixWang47831

dts/arm/nxp/nxp_rt118x_cm33.dtsi

@@ -44,11 +44,11 @@
 			zephyr,memory-attr = <DT_MEM_ARM(ATTR_MPU_DEVICE)>;
 		};
 
-		flexspi: memory-controller@525e0000 {
+		flexspi: spi@525e0000 {
 			reg = <0x525e0000 0x4000>, <0x38000000 DT_SIZE_M(128)>;
 		};
 
-		flexspi2: memory-controller@545e0000 {
+		flexspi2: spi@545e0000 {
 			reg = <0x545e0000 0x4000>, <0x14000000 DT_SIZE_M(64)>;
 		};
 	};

dts/arm/nxp/nxp_rt118x_cm7.dtsi

@@ -31,11 +31,11 @@
 			reg = <0x40000000 0x40000000>;
 		};
 
-		flexspi: memory-controller@425e0000 {
+		flexspi: spi@425e0000 {
 			reg = <0x425e0000 0x4000>, <0x28000000 DT_SIZE_M(128)>;
 		};
 
-		flexspi2: memory-controller@445e0000 {
+		flexspi2: spi@445e0000 {
 			reg = <0x445e0000 0x4000>, <0x04000000 DT_SIZE_M(64)>;
 		};
 	};

dts/arm/nxp/nxp_rt7xx_cm33_cpu0.dtsi

@@ -55,11 +55,11 @@
 	};
 
 	soc {
-		xspi0: memory-controller@50184000 {
+		xspi0: spi@50184000 {
 			reg = <0x50184000 0x1000>, <0x38000000 DT_SIZE_M(128)>;
 		};
 
-		xspi1: memory-controller@50185000 {
+		xspi1: spi@50185000 {
 			reg = <0x50185000 0x1000>, <0x18000000 DT_SIZE_M(128)>;
 		};
 	};

dts/arm/nxp/nxp_rt7xx_common.dtsi

@@ -24,7 +24,7 @@
 			ranges = <0x0 0x50000000 0x10000000>;
 		};
 
-		xspi2: memory-controller@50411000 {
+		xspi2: spi@50411000 {
 			reg = <0x50411000 0x1000>, <0x70000000 DT_SIZE_M(128)>;
 		};
 	};