nodejs: not supported on old ARM cores

nodejs needs the ARM blx instruction which is only supported in v5t+
cores (v5 ISA with thumb instructions).
Disable it for lower cores. Fixes:
http://autobuild.buildroot.net/results/89e/89ee5ba047a26a8c7a612d0285b08780b70efbd4/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/nodejs/Config.in

@@ -5,6 +5,8 @@ config BR2_PACKAGE_NODEJS
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_arm || BR2_i386 || BR2_x86_64
+	# ARM needs BLX, so v5t+
+	depends on !(BR2_arm7tdmi || BR2_arm720t || BR2_arm920t || BR2_arm922t || BR2_fa526)
 	# uses fork()
 	depends on BR2_USE_MMU
 	help