can-festival: disable on musl

Previous attempts to fix it failed [1], so disable it instead.

[1] http://patchwork.ozlabs.org/patch/509731/

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/canfestival/Config.in

@@ -2,13 +2,16 @@ config BR2_PACKAGE_CANFESTIVAL_ARCH_SUPPORTS
 	bool
 	default y if BR2_i386 || BR2_x86_64 || BR2_powerpc || BR2_arm
 
-comment "canfestival needs a toolchain w/ threads and dynamic library"
+comment "canfestival needs a (e)glibc or uClibc toolchain w/ threads and dynamic library"
 	depends on BR2_PACKAGE_CANFESTIVAL_ARCH_SUPPORTS
-	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
+	depends on BR2_TOOLCHAIN_USES_MUSL || \
+		!BR2_TOOLCHAIN_HAS_THREADS || \
+		BR2_STATIC_LIBS
 
 config BR2_PACKAGE_CANFESTIVAL
 	bool "canfestival"
 	depends on BR2_PACKAGE_CANFESTIVAL_ARCH_SUPPORTS
+	depends on !BR2_TOOLCHAIN_USES_MUSL
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on !BR2_STATIC_LIBS
 	help