libiio: Disable IIOD on Blackfin

IIOD uses accept4, which is not yet available on Blackfin.

Fixes:
 http://autobuild.buildroot.net/results/b75/b7552c9325ffcc7f1cb6e114b82648f3280fded6/

[Peter: hide other toolchain comment on bfin]
Signed-off-by: Paul Cercueil <paul.cercueil@analog.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libiio/Config.in

@@ -53,12 +53,17 @@ config BR2_PACKAGE_LIBIIO_IIOD
 	bool "IIO Daemon"
 	select BR2_PACKAGE_LIBIIO_LOCAL_BACKEND
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_bfin
 	default y
 	help
 	  Install the IIO Daemon.
 
 comment "IIO Daemon needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_bfin
+
+comment "IIO Daemon is not yet available on Blackfin"
+	depends on BR2_bfin
 
 config BR2_PACKAGE_LIBIIO_TESTS
 	bool "Install test programs"