libssh2: disable on broken nios2 toolchains

Fixes:

  http://autobuild.buildroot.org/results/bcf/bcfd8287a8d3dec2d66aa8191910f4dab0d7be36/

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

package/libssh2/Config.in

@@ -1,6 +1,9 @@
 config BR2_PACKAGE_LIBSSH2
 	bool "libssh2"
 	select BR2_PACKAGE_LIBGCRYPT if !BR2_PACKAGE_OPENSSL
+	# Triggers the _gp link issue
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405
 	help
 	  libssh2 is a client-side C library implementing the SSH2
 	  protocol as defined by Internet Drafts: SECSH-TRANS(22),

package/php-ssh2/Config.in

@@ -2,6 +2,9 @@ config BR2_PACKAGE_PHP_SSH2
 	bool "php-ssh2"
 	depends on BR2_PACKAGE_PHP
 	select BR2_PACKAGE_LIBSSH2
+	# Triggers the _gp link issue (libssh2)
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405
 	help
 	  PHP bindings for the libssh2 library.