hwdata: allow to build native variant

This is a requirement for libdisplay-info version 0.2.0, which fails
without hwdata-native:

| WARNING: CMake Toolchain: Failed to determine CMake compilers state
| Build-time dependency hwdata found: NO (tried pkgconfig)
|
| ../git/meson.build:24:11: ERROR: File /usr/share/hwdata/pnp.ids does not exist.
|
| ERROR: meson failed
| WARNING: exit code 1 from a shell command.
ERROR: Task
(poky/meta/recipes-support/libdisplay-info/libdisplay-info_0.2.0.bb:do_configure)
failed with exit code '1'

Signed-off-by: Hiago De Franco <hiago.franco@toradex.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/hwdata/hwdata_0.389.bb

@@ -24,3 +24,5 @@ do_install() {
 
 FILES:${PN} = "${libdir}/* \
                ${datadir}/* "
+
+BBCLASSEXTEND += "native"