speexdsp: enable native variant

Latest wireshark (4.2.0) is needed for python 3.12 support;
it also requires speexdsp unconditionally, and wireshark-native
for its own build helper tools in native versions.

So speexdsp needs a native version so that wireshark-native
builds without error.

(From OE-Core rev: 44f2525e76ad5832faad1968037c8da8b6a285d2)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-multimedia/speex/speexdsp_1.2.1.bb

@@ -24,3 +24,5 @@ RCONFLICTS:${PN} = "speex (< 1.2rc2)"
 RCONFLICTS:${PN}-dbg = "speex-dbg (< 1.2rc2)"
 RCONFLICTS:${PN}-dev = "speex-dev (< 1.2rc2)"
 RCONFLICTS:${PN}-staticdev = "speex-staticdev (< 1.2rc2)"
+
+BBCLASSEXTEND = "native"