auron_yuna: Fix typo in audio install function

install_audio_config should be install_audio_configs

BUG=b:139952079
TEST=build_packages + ensure audio configs are installed on yuna

Change-Id: I1e44cf1b00dfb6e56969547c30f2b08b7fc416c0
(cherry picked from commit b7228f614c652ac340c382df73826eb57a782225)
diff --git a/overlay-variant-auron-yuna/chromeos-base/chromeos-bsp-yuna/chromeos-bsp-yuna-0.0.1.ebuild b/overlay-variant-auron-yuna/chromeos-base/chromeos-bsp-yuna/chromeos-bsp-yuna-0.0.1.ebuild
index f11bca6..0b91a40 100644
--- a/overlay-variant-auron-yuna/chromeos-base/chromeos-bsp-yuna/chromeos-bsp-yuna-0.0.1.ebuild
+++ b/overlay-variant-auron-yuna/chromeos-base/chromeos-bsp-yuna/chromeos-bsp-yuna-0.0.1.ebuild
@@ -30,5 +30,5 @@
 
 	# Install audio config files
 	local audio_config_dir="${FILESDIR}/audio-config"
-	install_audio_config auron_yuna "${audio_config_dir}"
+	install_audio_configs auron_yuna "${audio_config_dir}"
 }