Summary:
  Modified the usage logic, mainly introduced lib_get_pathbuffer and lib_put_pathbuffer

Signed-off-by: chenrun1 <[email protected]>

libs/libc/locale/lib_catalog.c:197:9: warning: implicit declaration of function ‘lib_get_pathbuffer’ [-Wimplicit-function-declaration]
  197 |   buf = lib_get_pathbuffer();
      |         ^~~~~~~~~~~~~~~~~~
libs/libc/locale/lib_catalog.c:197:7: warning: assignment to ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
  197 |   buf = lib_get_pathbuffer();
      |       ^
libs/libc/locale/lib_catalog.c:294:13: warning: implicit declaration of function ‘lib_put_pathbuffer’ [-Wimplicit-function-declaration]
  294 |             lib_put_pathbuffer(buf);

Signed-off-by: zhangshoukui <[email protected]>

Summary
 When CONFIG_HAVE_BUILTIN_XXX is enabled, use builtin functions to avoid implementation conflicts
riscv-none-elf-ld: /github/workspace/sources/nuttx/staging/libc.a(exec_symtab.o): in function `ffs':
/github/workspace/sources/nuttx/libs/libc/exec_symtab.c:81: multiple definition of `ffs'; /github/workspace/sources/nuttx/staging/libc.a(lib_ffs.o):/github/workspace/sources/nuttx/libs/libc/string/lib_ffs.c:51: first defined here
make[1]: *** [Makefile:189: nuttx] Error 1
make: *** [tools/Unix.mk:551: nuttx] Error 2

Signed-off-by: chenrun1 <[email protected]>