slang: add nativesdk

Add nativesdk for slang.

(From OE-Core rev: 458c835fe05279467ab781aab811498ab80f6904)

Signed-off-by: Zheng Ruoqin <zhengrq.fnst@cn.fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/slang/slang_2.3.2.bb

@@ -78,4 +78,4 @@ FILES_${PN} += "${libdir}/${BPN}/v2/modules/ ${datadir}/slsh/"
 PARALLEL_MAKE = ""
 PARALLEL_MAKEINST = ""
 
-BBCLASSEXTEND = "native"
+BBCLASSEXTEND = "native nativesdk"