boards: snps: nsim: align SEM platforms

Fix ICCM/DCCM properties in DTS to match the intended configuration,
along with some other minor inconsistencies.

Signed-off-by: Ilya Tagunov <[email protected]>

Author: tagunil

boards/snps/nsim/arc_classic/nsim_nsim_sem.dts

@@ -4,27 +4,14 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-
 /dts-v1/;
 
+#define ICCM_SIZE DT_SIZE_K(256)
+#define DCCM_SIZE DT_SIZE_K(256)
+
 #include "nsim_em-sec.dtsi"
 
 / {
-
-	model = "nsim_sem";
+	model = "snps,nsim_sem";
 	compatible = "snps,nsim_sem";
-
-	iccm0: iccm@0 {
-		compatible = "arc,iccm";
-		reg = <0x0 0x40000>;
-	};
-
-	dccm0: dccm@80000000 {
-		compatible = "arc,dccm";
-		reg = <0x80000000 0x40000>;
-	};
-
-	chosen {
-		zephyr,sram = &dccm0;
-	};
 };

boards/snps/nsim/arc_classic/nsim_nsim_sem.yaml

@@ -1,5 +1,5 @@
 identifier: nsim/nsim_sem
-name: SEM Nsim simulator
+name: SEM nSIM simulator
 type: sim
 arch: arc
 simulation:

boards/snps/nsim/arc_classic/nsim_nsim_sem_mpu_stack_guard.dts

@@ -6,9 +6,12 @@
 
 /dts-v1/;
 
+#define ICCM_SIZE DT_SIZE_K(512)
+#define DCCM_SIZE DT_SIZE_K(512)
+
 #include "nsim_em-sec.dtsi"
 
 / {
-	model = "snps,nsim_sem_mpu_stack_guard";
-	compatible = "snps,nsim_sem_mpu_stack_guard.dts";
+	model = "snps,nsim_sem";
+	compatible = "snps,nsim_sem";
 };