gobject-introspection: set GI_SCANNER_DISABLE_CACHE for native

gobject-introspection: set GI_SCANNER_DISABLE_CACHE for native

The native recipe should not write files to $HOME/.cache as target, this can
avoid problems when multi builds are running on the same host like:
|   File "./g-ir-scanner", line 66, in <module>
|     sys.exit(scanner_main(sys.argv))
|   File "../gobject-introspection-1.48.0/giscanner/scannermain.py", line 543, in scanner_main
|     transformer = create_transformer(namespace, options)
|   File "../gobject-introspection-1.48.0/giscanner/scannermain.py", line 389, in create_transformer
|     symbol_filter_cmd=options.symbol_filter_cmd)
|   File "../gobject-introspection-1.48.0/giscanner/transformer.py", line 54, in __init__
|     self._cachestore = CacheStore()
|   File "../gobject-introspection-1.48.0/giscanner/cachestore.py", line 61, in __init__
|     self._check_cache_version()
|   File "../gobject-introspection-1.48.0/giscanner/cachestore.py", line 89, in _check_cache_version
|     self._clean()
|   File "../gobject-introspection-1.48.0/giscanner/cachestore.py", line 141, in _clean
|     self._remove_filename(os.path.join(self._directory, filename))
|   File "../gobject-introspection-1.48.0/giscanner/cachestore.py", line 123, in _remove_filename
|     os.unlink(filename)
| FileNotFoundError: [Errno 2] No such file or directory: '/home/pokybuild/.cache/g-ir-scanner/0a47aa95823c95a0b5d1bd610b60d02f35785f26'
| Makefile:3518: recipe for target 'GModule-2.0.gir' failed

(From OE-Core rev: d3c48ff7d19e86b2338b1778f9563969bba3d336)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>