feat(time): Add syscall support for utime* (#838)

* feat(vfs): Add syscall support for utime*

impl sys_utimensat
impl sys_utimes
add utimensat test
fix some warning

* fix(vfs): Verify pointer validity

* fix: remove bad cfg

user/apps/test_utimensat/.gitignore

@@ -0,0 +1 @@
+test_utimensat

user/apps/test_utimensat/Makefile

@@ -0,0 +1,20 @@
+ifeq ($(ARCH), x86_64)
+	CROSS_COMPILE=x86_64-linux-musl-
+else ifeq ($(ARCH), riscv64)
+	CROSS_COMPILE=riscv64-linux-musl-
+endif
+
+CC=$(CROSS_COMPILE)gcc
+
+.PHONY: all
+all: main.c
+	$(CC) -static -o test_utimensat main.c
+
+.PHONY: install clean
+install: all
+	mv test_utimensat $(DADK_CURRENT_BUILD_DIR)/test_utimensat
+
+clean:
+	rm test_utimensat *.o
+
+fmt:

user/apps/test_utimensat/main.c

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+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+
+int main(){
+    int res = utimensat(AT_FDCWD, "/bin/about.elf", NULL, 0);
+    printf("utimensat res = %d\n", res);
+}

user/dadk/config/test_utimensat_0_1_0.dadk

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+{
+  "name": "test_utimensat",
+  "version": "0.1.0",
+  "description": "test_utimensat",
+  "task_type": {
+    "BuildFromSource": {
+      "Local": {
+        "path": "apps/test_utimensat"
+      }
+    }
+  },
+  "depends": [],
+  "build": {
+    "build_command": "make install"
+  },
+  "install": {
+    "in_dragonos_path": "/bin"
+  },
+  "clean": {
+    "clean_command": "make clean"
+  },
+  "target_arch": ["x86_64"]
+}