beep: optimize

function                                             old     new   delta
beep_main                                            394     276    -118

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/scripts/defconfig b/scripts/defconfig
index 394839b..797f275 100644
--- a/scripts/defconfig
+++ b/scripts/defconfig
@@ -569,7 +569,7 @@
 # CONFIG_BBCONFIG is not set
 CONFIG_BEEP=y
 CONFIG_FEATURE_BEEP_FREQ=4000
-CONFIG_FEATURE_BEEP_LENGTH=30
+CONFIG_FEATURE_BEEP_LENGTH_MS=30
 CONFIG_CHAT=y
 CONFIG_FEATURE_CHAT_NOFAIL=y
 # CONFIG_FEATURE_CHAT_TTY_HIFI is not set