target/loongarch: Add common header file for CSR registers

Common header file csr.h is added here, it can be used by both
TCG mode and kvm mode.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>

Author: bibo-mao

target/loongarch/csr.h

@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2025 Loongson Technology Corporation Limited
+ */
+
+#ifndef TARGET_LOONGARCH_CSR_H
+#define TARGET_LOONGARCH_CSR_H
+
+#include "cpu-csr.h"
+
+typedef void (*GenCSRFunc)(void);
+enum {
+    CSRFL_READONLY = (1 << 0),
+    CSRFL_EXITTB   = (1 << 1),
+    CSRFL_IO       = (1 << 2),
+};
+
+typedef struct {
+    int offset;
+    int flags;
+    GenCSRFunc readfn;
+    GenCSRFunc writefn;
+} CSRInfo;
+
+#endif /* TARGET_LOONGARCH_CSR_H */

target/loongarch/tcg/insn_trans/trans_privileged.c.inc

@@ -5,7 +5,7 @@
  * LoongArch translation routines for the privileged instructions.
  */
 
-#include "cpu-csr.h"
+#include "csr.h"
 
 #ifdef CONFIG_USER_ONLY
 
@@ -44,20 +44,6 @@ GEN_FALSE_TRANS(idle)
 
 typedef void (*GenCSRRead)(TCGv dest, TCGv_ptr env);
 typedef void (*GenCSRWrite)(TCGv dest, TCGv_ptr env, TCGv src);
-typedef void (*GenCSRFunc)(void);
-
-typedef struct {
-    int offset;
-    int flags;
-    GenCSRFunc readfn;
-    GenCSRFunc writefn;
-} CSRInfo;
-
-enum {
-    CSRFL_READONLY = (1 << 0),
-    CSRFL_EXITTB   = (1 << 1),
-    CSRFL_IO       = (1 << 2),
-};
 
 #define CSR_OFF_FUNCS(NAME, FL, RD, WR)                    \
     [LOONGARCH_CSR_##NAME] = {                             \