android-tools: needs thread support

Both adb and adbd use <pthread.h>, and fastboot needs thread due to
its dependency on libselinux, so we put the dependency in the
top-level android-tools Config.in option.

Fixes:

  http://autobuild.buildroot.net/results/bafadedc0ae91f8a1e26d14f30b37d6bb9486816/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/android-tools/Config.in

@@ -6,6 +6,7 @@ config BR2_PACKAGE_ANDROID_TOOLS
 	# has some complicated dependencies, we simply make the whole
 	# package not available on noMMU platforms.
 	depends on BR2_USE_MMU
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_ANDROID_TOOLS_ADBD if \
 	      !BR2_PACKAGE_ANDROID_TOOLS_FASTBOOT && \
 	      !BR2_PACKAGE_ANDROID_TOOLS_ADB
@@ -53,3 +54,7 @@ config BR2_PACKAGE_ANDROID_TOOLS_ADBD
 	  implementing the ADB protocol.
 
 endif
+
+comment "android-tools needs a toolchain w/ threads"
+	depends on BR2_USE_MMU
+	depends on !BR2_TOOLCHAIN_HAS_THREADS