update_cpu_features: rename generic csky model to e2

lib/std/Target.zig

@@ -2050,6 +2050,7 @@ pub const Cpu = struct {
                 .amdgcn => &amdgcn.cpu.gfx600,
                 .avr => &avr.cpu.avr1,
                 .bpfel, .bpfeb => &bpf.cpu.v1,
+                .csky => &csky.cpu.e2,
                 .hexagon => &hexagon.cpu.hexagonv60,
                 .hppa => &hppa.cpu.ts_1,
                 .hppa64 => &hppa.cpu.pa_8000,

lib/std/Target/csky.zig

@@ -2428,6 +2428,13 @@ pub const cpu = struct {
             .vdspv2,
         }),
     };
+    pub const e2: CpuModel = .{
+        .name = "e2",
+        .llvm_name = null,
+        .features = featureSet(&[_]Feature{
+            .e2,
+        }),
+    };
     pub const e801: CpuModel = .{
         .name = "e801",
         .llvm_name = "e801",
@@ -2571,13 +2578,6 @@ pub const cpu = struct {
             .trust,
         }),
     };
-    pub const generic: CpuModel = .{
-        .name = "generic",
-        .llvm_name = null,
-        .features = featureSet(&[_]Feature{
-            .e2,
-        }),
-    };
     pub const @"i805": CpuModel = .{
         .name = "i805",
         .llvm_name = "i805",

tools/update_cpu_features.zig

@@ -2146,7 +2146,7 @@ const targets = [_]ArchTarget{
         .extra_models = &.{
             .{
                 .llvm_name = null,
-                .zig_name = "generic",
+                .zig_name = "e2",
                 .features = &.{"e2"},
             },
         },