staging: greybus: fix spelling mistake: "Inavlid" -> "Invalid"

Trivial fix to spelling mistake in dev_err error message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/greybus/audio_topology.c

@@ -996,7 +996,7 @@ static int gbaudio_tplg_create_widget(struct gbaudio_module_info *module,
 
 	ret = gbaudio_validate_kcontrol_count(w);
 	if (ret) {
-		dev_err(module->dev, "Inavlid kcontrol count=%d for %s\n",
+		dev_err(module->dev, "Invalid kcontrol count=%d for %s\n",
 			w->ncontrols, w->name);
 		return ret;
 	}