ARC: [arcfpga] consolidate machine description, DT

* AA4/ML509 have same machine descriptions
* Rename simulation machine description

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/boot/dts/angel4.dts

@@ -24,11 +24,6 @@
 		serial0 = &arcuart0;
 	};
 
-	memory {
-		device_type = "memory";
-		reg = <0x00000000 0x10000000>;	/* 256M */
-	};
-
 	fpga {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arc/boot/dts/nsimosci.dts

@@ -27,11 +27,6 @@
 		serial0 = &uart0;
 	};
 
-	memory {
-		device_type = "memory";
-		reg = <0x80000000 0x10000000>;	/* 256M */
-	};
-
 	fpga {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arc/plat-arcfpga/platform.c

@@ -48,27 +48,14 @@ static void __init plat_fpga_populate_dev(void)
  * callback set, by matching the DT compatible name.
  */
 
-static const char *aa4_compat[] __initconst = {
+static const char *legacy_fpga_compat[] __initconst = {
 	"snps,arc-angel4",
-	NULL,
-};
-
-MACHINE_START(ANGEL4, "angel4")
-	.dt_compat	= aa4_compat,
-	.init_early	= plat_fpga_early_init,
-	.init_machine	= plat_fpga_populate_dev,
-#ifdef CONFIG_ISS_SMP_EXTN
-	.init_smp	= iss_model_init_smp,
-#endif
-MACHINE_END
-
-static const char *ml509_compat[] __initconst = {
 	"snps,arc-ml509",
 	NULL,
 };
 
-MACHINE_START(ML509, "ml509")
-	.dt_compat	= ml509_compat,
+MACHINE_START(LEGACY_FPGA, "legacy_fpga")
+	.dt_compat	= legacy_fpga_compat,
 	.init_early	= plat_fpga_early_init,
 	.init_machine	= plat_fpga_populate_dev,
 #ifdef CONFIG_ISS_SMP_EXTN
@@ -76,13 +63,13 @@ MACHINE_START(ML509, "ml509")
 #endif
 MACHINE_END
 
-static const char *nsimosci_compat[] __initconst = {
+static const char *simulation_compat[] __initconst = {
+	"snps,nsim",
 	"snps,nsimosci",
 	NULL,
 };
 
-MACHINE_START(NSIMOSCI, "nsimosci")
-	.dt_compat	= nsimosci_compat,
-	.init_early	= NULL,
+MACHINE_START(SIMULATION, "simulation")
+	.dt_compat	= simulation_compat,
 	.init_machine	= plat_fpga_populate_dev,
 MACHINE_END