ARM: dts: am: Rename "ocmcram" node to "sram"

The device node name should reflect generic class of a device so rename
the "ocmcram" node and its children to "sram". This will be also in
sync with upcoming DT schema. No functional change.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Tony Lindgren <[e-mail]>

arch/arm/boot/dts/am33xx.dtsi

···
 			};
 		};
 
-		ocmcram: ocmcram@40300000 {
+		ocmcram: sram@40300000 {
 			compatible = "mmio-sram";
 			reg = <0x40300000 0x10000>; /* 64k */
 			ranges = <0x0 0x40300000 0x10000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 
-			pm_sram_code: pm-sram-code@0 {
+			pm_sram_code: pm-code-sram@0 {
 				compatible = "ti,sram";
 				reg = <0x0 0x1000>;
 				protect-exec;
 			};
 
-			pm_sram_data: pm-sram-data@1000 {
+			pm_sram_data: pm-data-sram@1000 {
 				compatible = "ti,sram";
 				reg = <0x1000 0x1000>;
 				pool;

arch/arm/boot/dts/am4372.dtsi

···
 			};
 		};
 
-		ocmcram: ocmcram@40300000 {
+		ocmcram: sram@40300000 {
 			compatible = "mmio-sram";
 			reg = <0x40300000 0x40000>; /* 256k */
 			ranges = <0x0 0x40300000 0x40000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 
-			pm_sram_code: pm-sram-code@0 {
+			pm_sram_code: pm-code-sram@0 {
 				compatible = "ti,sram";
 				reg = <0x0 0x1000>;
 				protect-exec;
 			};
 
-			pm_sram_data: pm-sram-data@1000 {
+			pm_sram_data: pm-data-sram@1000 {
 				compatible = "ti,sram";
 				reg = <0x1000 0x1000>;
 				pool;