Remove unused configs, switch baresip to musl

projects/t31_baresip/br-ext-chip-ingenic/configs/t31_baresip_defconfig

@@ -13,9 +13,9 @@ BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_10=y
 # Toolchain
 BR2_PER_PACKAGE_DIRECTORIES=y
 BR2_GCC_VERSION_8_X=y
-BR2_TOOLCHAIN_USES_UCLIBC=y
-BR2_TOOLCHAIN_BUILDROOT_UCLIBC=y
-BR2_TOOLCHAIN_BUILDROOT_LIBC="uclibc"
+BR2_TOOLCHAIN_USES_MUSL=y
+BR2_TOOLCHAIN_BUILDROOT_MUSL=y
+BR2_TOOLCHAIN_BUILDROOT_LIBC="musl"
 BR2_EXTRA_GCC_CONFIG_OPTIONS="--with-float=hard"
 BR2_TOOLCHAIN_BUILDROOT_CXX=y
 BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
@@ -67,7 +67,7 @@ BR2_PACKAGE_LIBEVENT_OPENIPC=y
 BR2_PACKAGE_LIBEVENT_OPENIPC_REMOVE_PYSCRIPT=y
 BR2_PACKAGE_LIBOGG_OPENIPC=y
 BR2_PACKAGE_LIBYAML=y
-BR2_PACKAGE_MAJESTIC_FONTS=y
+# BR2_PACKAGE_MAJESTIC_FONTS is not set
 # BR2_PACKAGE_MAJESTIC is not set
 BR2_PACKAGE_MBEDTLS_OPENIPC=y
 # BR2_PACKAGE_MBEDTLS_OPENIPC_PROGRAMS is not set
@@ -107,5 +107,6 @@ BR2_PACKAGE_BARESIP_OPENIPC=y
 BR2_PACKAGE_LIBRE_OPENIPC=y
 BR2_PACKAGE_LIBREM_OPENIPC=y
 
-# Experimental
-BR2_PACKAGE_DEMO_OPENIPC=y
+# MQTT
+BR2_PACKAGE_MOSQUITTO=y
+# BR2_PACKAGE_MOSQUITTO_BROKER is not set