[POWERPC] spi: Use fsl_spi instead of mpc83xx_spi

According to booting-without-of.txt, compatible should be "fsl_spi" and
mode "cpu" or "qe" for the fsl SPI controllers.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/mpc8313erdb.dts

@@ -71,11 +71,11 @@ i2c@3100 {
 
 		spi@7000 {
 			device_type = "spi";
-			compatible = "mpc83xx_spi";
+			compatible = "fsl_spi";
 			reg = <7000 1000>;
 			interrupts = <10 8>;
 			interrupt-parent = < &ipic >;
-			mode = <0>;
+			mode = "cpu";
 		};
 
 		/* phy type (ULPI, UTMI, UTMI_WIDE, SERIAL) */

arch/powerpc/boot/dts/mpc8349emitx.dts

@@ -70,11 +70,11 @@ i2c@3100 {
 
 		spi@7000 {
 			device_type = "spi";
-			compatible = "mpc83xx_spi";
+			compatible = "fsl_spi";
 			reg = <7000 1000>;
 			interrupts = <10 8>;
 			interrupt-parent = < &ipic >;
-			mode = <0>;
+			mode = "cpu";
 		};
 
 		usb@22000 {

arch/powerpc/boot/dts/mpc8349emitxgp.dts

@@ -70,11 +70,11 @@ i2c@3100 {
 
 		spi@7000 {
 			device_type = "spi";
-			compatible = "mpc83xx_spi";
+			compatible = "fsl_spi";
 			reg = <7000 1000>;
 			interrupts = <10 8>;
 			interrupt-parent = < &ipic >;
-			mode = <0>;
+			mode = "cpu";
 		};
 
 		usb@23000 {

arch/powerpc/boot/dts/mpc834x_mds.dts

@@ -76,11 +76,11 @@ i2c@3100 {
 
 		spi@7000 {
 			device_type = "spi";
-			compatible = "mpc83xx_spi";
+			compatible = "fsl_spi";
 			reg = <7000 1000>;
 			interrupts = <10 8>;
 			interrupt-parent = < &ipic >;
-			mode = <0>;
+			mode = "cpu";
 		};
 
 		/* phy type (ULPI or SERIAL) are only types supportted for MPH */